Git does not support the ability to replace a token with a version string during check-in. While it does have support for replacing a token on clone, this is somewhat sub-optimal: the token is replaced with the object hash, which is not particularly easy for human consumption. What's more, in practice, the source file version was often not terribly useful. Generally, when triaging bugs, the overall version of Asterisk is far more useful than an individual SVN version of a file. As a result, this patch removes Asterisk's support for showing source file versions. Specifically, it does the following: * Rename ASTERISK_FILE_VERSION macro to ASTERISK_REGISTER_FILE, and remove passing the version in with the macro. Other facilities than 'core show file version' make use of the file names, such as setting a debug level only on a specific file. As such, the act of registering source files with the Asterisk core still has use. The macro rename now reflects the new macro purpose. * main/asterisk: - Refactor the file_version structure to reflect that it no longer tracks a version field. - Remove the "core show file version" CLI command. Without the file version, it is no longer useful. - Remove the ast_file_version_find function. The file version is no longer tracked. - Rename ast_register_file_version/ast_unregister_file_version to ast_register_file/ast_unregister_file, respectively. * main/manager: Remove value from the Version key of the ModuleCheck Action. The actual key itself has not been removed, as doing so would absolutely constitute a backwards incompatible change. However, since the file version is no longer tracked, there is no need to attempt to include it in the Version key. * UPGRADE: Add notes for: - Modification to the ModuleCheck AMI Action - Removal of the "core show file version" CLI command Change-Id: I6cf0ff280e1668bf4957dc21f32a5ff43444a40e
1291 lines
40 KiB
C
1291 lines
40 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2010, Digium, Inc.
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
|
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Environment related dialplan functions
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*
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* \ingroup functions
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_REGISTER_FILE()
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#include <sys/stat.h> /* stat(2) */
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#include "asterisk/module.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/utils.h"
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#include "asterisk/app.h"
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#include "asterisk/file.h"
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|
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/*** DOCUMENTATION
|
|
<function name="ENV" language="en_US">
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|
<synopsis>
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|
Gets or sets the environment variable specified.
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|
</synopsis>
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|
<syntax>
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|
<parameter name="varname" required="true">
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|
<para>Environment variable name</para>
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|
</parameter>
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|
</syntax>
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|
<description>
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|
<para>Variables starting with <literal>AST_</literal> are reserved to the system and may not be set.</para>
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|
</description>
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|
</function>
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|
<function name="STAT" language="en_US">
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|
<synopsis>
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|
Does a check on the specified file.
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|
</synopsis>
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|
<syntax>
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|
<parameter name="flag" required="true">
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|
<para>Flag may be one of the following:</para>
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|
<para>d - Checks if the file is a directory.</para>
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|
<para>e - Checks if the file exists.</para>
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|
<para>f - Checks if the file is a regular file.</para>
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|
<para>m - Returns the file mode (in octal)</para>
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|
<para>s - Returns the size (in bytes) of the file</para>
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|
<para>A - Returns the epoch at which the file was last accessed.</para>
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<para>C - Returns the epoch at which the inode was last changed.</para>
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|
<para>M - Returns the epoch at which the file was last modified.</para>
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|
</parameter>
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|
<parameter name="filename" required="true" />
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|
</syntax>
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|
<description>
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|
<note>
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|
<para>If <literal>live_dangerously</literal> in <literal>asterisk.conf</literal>
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|
is set to <literal>no</literal>, this function can only be executed from the
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dialplan, and not directly from external protocols.</para>
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|
</note>
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|
</description>
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|
</function>
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<function name="FILE" language="en_US">
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<synopsis>
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|
Read or write text file.
|
|
</synopsis>
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|
<syntax>
|
|
<parameter name="filename" required="true" />
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|
<parameter name="offset">
|
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<para>Maybe specified as any number. If negative, <replaceable>offset</replaceable> specifies the number
|
|
of bytes back from the end of the file.</para>
|
|
</parameter>
|
|
<parameter name="length">
|
|
<para>If specified, will limit the length of the data read to that size. If negative,
|
|
trims <replaceable>length</replaceable> bytes from the end of the file.</para>
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|
</parameter>
|
|
<parameter name="options">
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|
<optionlist>
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|
<option name="l">
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|
<para>Line mode: offset and length are assumed to be
|
|
measured in lines, instead of byte offsets.</para>
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|
</option>
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|
<option name="a">
|
|
<para>In write mode only, the append option is used to
|
|
append to the end of the file, instead of overwriting
|
|
the existing file.</para>
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|
</option>
|
|
<option name="d">
|
|
<para>In write mode and line mode only, this option does
|
|
not automatically append a newline string to the end of
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|
a value. This is useful for deleting lines, instead of
|
|
setting them to blank.</para>
|
|
</option>
|
|
</optionlist>
|
|
</parameter>
|
|
<parameter name="format">
|
|
<para>The <replaceable>format</replaceable> parameter may be
|
|
used to delimit the type of line terminators in line mode.</para>
|
|
<optionlist>
|
|
<option name="u">
|
|
<para>Unix newline format.</para>
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|
</option>
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|
<option name="d">
|
|
<para>DOS newline format.</para>
|
|
</option>
|
|
<option name="m">
|
|
<para>Macintosh newline format.</para>
|
|
</option>
|
|
</optionlist>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
|
|
<para>Read and write text file in character and line mode.</para>
|
|
<para>Examples:</para>
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|
<para/>
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|
<para>Read mode (byte):</para>
|
|
<para> ;reads the entire content of the file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt)})</para>
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|
<para> ;reads from the 11th byte to the end of the file (i.e. skips the first 10).</para>
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|
<para> Set(foo=${FILE(/tmp/test.txt,10)})</para>
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|
<para> ;reads from the 11th to 20th byte in the file (i.e. skip the first 10, then read 10 bytes).</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,10,10)})</para>
|
|
<para/>
|
|
<para>Read mode (line):</para>
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|
<para> ; reads the 3rd line of the file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,3,1,l)})</para>
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|
<para> ; reads the 3rd and 4th lines of the file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,3,2,l)})</para>
|
|
<para> ; reads from the third line to the end of the file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,3,,l)})</para>
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|
<para> ; reads the last three lines of the file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,-3,,l)})</para>
|
|
<para> ; reads the 3rd line of a DOS-formatted file.</para>
|
|
<para> Set(foo=${FILE(/tmp/test.txt,3,1,l,d)})</para>
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|
<para/>
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|
<para>Write mode (byte):</para>
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|
<para> ; truncate the file and write "bar"</para>
|
|
<para> Set(FILE(/tmp/test.txt)=bar)</para>
|
|
<para> ; Append "bar"</para>
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|
<para> Set(FILE(/tmp/test.txt,,,a)=bar)</para>
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|
<para> ; Replace the first byte with "bar" (replaces 1 character with 3)</para>
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|
<para> Set(FILE(/tmp/test.txt,0,1)=bar)</para>
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|
<para> ; Replace 10 bytes beginning at the 21st byte of the file with "bar"</para>
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|
<para> Set(FILE(/tmp/test.txt,20,10)=bar)</para>
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|
<para> ; Replace all bytes from the 21st with "bar"</para>
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|
<para> Set(FILE(/tmp/test.txt,20)=bar)</para>
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|
<para> ; Insert "bar" after the 4th character</para>
|
|
<para> Set(FILE(/tmp/test.txt,4,0)=bar)</para>
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|
<para/>
|
|
<para>Write mode (line):</para>
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|
<para> ; Replace the first line of the file with "bar"</para>
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|
<para> Set(FILE(/tmp/foo.txt,0,1,l)=bar)</para>
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|
<para> ; Replace the last line of the file with "bar"</para>
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|
<para> Set(FILE(/tmp/foo.txt,-1,,l)=bar)</para>
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<para> ; Append "bar" to the file with a newline</para>
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<para> Set(FILE(/tmp/foo.txt,,,al)=bar)</para>
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<note>
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|
<para>If <literal>live_dangerously</literal> in <literal>asterisk.conf</literal>
|
|
is set to <literal>no</literal>, this function can only be executed from the
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dialplan, and not directly from external protocols.</para>
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|
</note>
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|
</description>
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|
<see-also>
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|
<ref type="function">FILE_COUNT_LINE</ref>
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|
<ref type="function">FILE_FORMAT</ref>
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</see-also>
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</function>
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|
<function name="FILE_COUNT_LINE" language="en_US">
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<synopsis>
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|
Obtains the number of lines of a text file.
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</synopsis>
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|
<syntax>
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|
<parameter name="filename" required="true" />
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|
<parameter name="format">
|
|
<para>Format may be one of the following:</para>
|
|
<optionlist>
|
|
<option name="u">
|
|
<para>Unix newline format.</para>
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|
</option>
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|
<option name="d">
|
|
<para>DOS newline format.</para>
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|
</option>
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|
<option name="m">
|
|
<para>Macintosh newline format.</para>
|
|
</option>
|
|
</optionlist>
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|
<note><para>If not specified, an attempt will be made to determine the newline format type.</para></note>
|
|
</parameter>
|
|
</syntax>
|
|
<description>
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|
<para>Returns the number of lines, or <literal>-1</literal> on error.</para>
|
|
<note>
|
|
<para>If <literal>live_dangerously</literal> in <literal>asterisk.conf</literal>
|
|
is set to <literal>no</literal>, this function can only be executed from the
|
|
dialplan, and not directly from external protocols.</para>
|
|
</note>
|
|
</description>
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|
<see-also>
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|
<ref type="function">FILE</ref>
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|
<ref type="function">FILE_FORMAT</ref>
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|
</see-also>
|
|
</function>
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|
<function name="FILE_FORMAT" language="en_US">
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|
<synopsis>
|
|
Return the newline format of a text file.
|
|
</synopsis>
|
|
<syntax>
|
|
<parameter name="filename" required="true" />
|
|
</syntax>
|
|
<description>
|
|
<para>Return the line terminator type:</para>
|
|
<para>'u' - Unix "\n" format</para>
|
|
<para>'d' - DOS "\r\n" format</para>
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|
<para>'m' - Macintosh "\r" format</para>
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|
<para>'x' - Cannot be determined</para>
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|
<note>
|
|
<para>If <literal>live_dangerously</literal> in <literal>asterisk.conf</literal>
|
|
is set to <literal>no</literal>, this function can only be executed from the
|
|
dialplan, and not directly from external protocols.</para>
|
|
</note>
|
|
</description>
|
|
<see-also>
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|
<ref type="function">FILE</ref>
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|
<ref type="function">FILE_COUNT_LINE</ref>
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|
</see-also>
|
|
</function>
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|
***/
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static int env_read(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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char *ret = NULL;
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*buf = '\0';
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if (data)
|
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ret = getenv(data);
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if (ret)
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ast_copy_string(buf, ret, len);
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return 0;
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}
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static int env_write(struct ast_channel *chan, const char *cmd, char *data,
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const char *value)
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{
|
|
if (!ast_strlen_zero(data) && strncmp(data, "AST_", 4)) {
|
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if (!ast_strlen_zero(value)) {
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setenv(data, value, 1);
|
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} else {
|
|
unsetenv(data);
|
|
}
|
|
}
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|
return 0;
|
|
}
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|
|
static int stat_read(struct ast_channel *chan, const char *cmd, char *data,
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char *buf, size_t len)
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{
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char *action;
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struct stat s;
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ast_copy_string(buf, "0", len);
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action = strsep(&data, ",");
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if (stat(data, &s)) {
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return 0;
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} else {
|
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switch (*action) {
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case 'e':
|
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strcpy(buf, "1");
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break;
|
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case 's':
|
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snprintf(buf, len, "%u", (unsigned int) s.st_size);
|
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break;
|
|
case 'f':
|
|
snprintf(buf, len, "%d", S_ISREG(s.st_mode) ? 1 : 0);
|
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break;
|
|
case 'd':
|
|
snprintf(buf, len, "%d", S_ISDIR(s.st_mode) ? 1 : 0);
|
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break;
|
|
case 'M':
|
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snprintf(buf, len, "%d", (int) s.st_mtime);
|
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break;
|
|
case 'A':
|
|
snprintf(buf, len, "%d", (int) s.st_mtime);
|
|
break;
|
|
case 'C':
|
|
snprintf(buf, len, "%d", (int) s.st_ctime);
|
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break;
|
|
case 'm':
|
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snprintf(buf, len, "%o", s.st_mode);
|
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break;
|
|
}
|
|
}
|
|
|
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return 0;
|
|
}
|
|
|
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enum file_format {
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FF_UNKNOWN = -1,
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FF_UNIX,
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FF_DOS,
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FF_MAC,
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};
|
|
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static int64_t count_lines(const char *filename, enum file_format newline_format)
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|
{
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int count = 0;
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char fbuf[4096];
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FILE *ff;
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if (!(ff = fopen(filename, "r"))) {
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ast_log(LOG_ERROR, "Unable to open '%s': %s\n", filename, strerror(errno));
|
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return -1;
|
|
}
|
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|
while (fgets(fbuf, sizeof(fbuf), ff)) {
|
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char *next = fbuf, *first_cr = NULL, *first_nl = NULL;
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/* Must do it this way, because if the fileformat is FF_MAC, then Unix
|
|
* assumptions about line-format will not come into play. */
|
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while (next) {
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if (newline_format == FF_DOS || newline_format == FF_MAC || newline_format == FF_UNKNOWN) {
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first_cr = strchr(next, '\r');
|
|
}
|
|
if (newline_format == FF_UNIX || newline_format == FF_UNKNOWN) {
|
|
first_nl = strchr(next, '\n');
|
|
}
|
|
|
|
/* No terminators found in buffer */
|
|
if (!first_cr && !first_nl) {
|
|
break;
|
|
}
|
|
|
|
if (newline_format == FF_UNKNOWN) {
|
|
if ((first_cr && !first_nl) || (first_cr && first_cr < first_nl)) {
|
|
if (first_nl && first_nl == first_cr + 1) {
|
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newline_format = FF_DOS;
|
|
} else if (first_cr && first_cr == &fbuf[sizeof(fbuf) - 2]) {
|
|
/* Get it on the next pass */
|
|
fseek(ff, -1, SEEK_CUR);
|
|
break;
|
|
} else {
|
|
newline_format = FF_MAC;
|
|
first_nl = NULL;
|
|
}
|
|
} else {
|
|
newline_format = FF_UNIX;
|
|
first_cr = NULL;
|
|
}
|
|
/* Jump down into next section */
|
|
}
|
|
|
|
if (newline_format == FF_DOS) {
|
|
if (first_nl && first_cr && first_nl == first_cr + 1) {
|
|
next = first_nl + 1;
|
|
count++;
|
|
} else if (first_cr == &fbuf[sizeof(fbuf) - 2]) {
|
|
/* Get it on the next pass */
|
|
fseek(ff, -1, SEEK_CUR);
|
|
break;
|
|
}
|
|
} else if (newline_format == FF_MAC) {
|
|
if (first_cr) {
|
|
next = first_cr + 1;
|
|
count++;
|
|
}
|
|
} else if (newline_format == FF_UNIX) {
|
|
if (first_nl) {
|
|
next = first_nl + 1;
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
fclose(ff);
|
|
|
|
return count;
|
|
}
|
|
|
|
static int file_count_line(struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
|
|
{
|
|
enum file_format newline_format = FF_UNKNOWN;
|
|
int64_t count;
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(filename);
|
|
AST_APP_ARG(format);
|
|
);
|
|
|
|
AST_STANDARD_APP_ARGS(args, data);
|
|
if (args.argc > 1) {
|
|
if (tolower(args.format[0]) == 'd') {
|
|
newline_format = FF_DOS;
|
|
} else if (tolower(args.format[0]) == 'm') {
|
|
newline_format = FF_MAC;
|
|
} else if (tolower(args.format[0]) == 'u') {
|
|
newline_format = FF_UNIX;
|
|
}
|
|
}
|
|
|
|
count = count_lines(args.filename, newline_format);
|
|
ast_str_set(buf, len, "%" PRId64, count);
|
|
return 0;
|
|
}
|
|
|
|
#define LINE_COUNTER(cptr, term, counter) \
|
|
if (*cptr == '\n' && term == FF_UNIX) { \
|
|
counter++; \
|
|
} else if (*cptr == '\n' && term == FF_DOS && dos_state == 0) { \
|
|
dos_state = 1; \
|
|
} else if (*cptr == '\r' && term == FF_DOS && dos_state == 1) { \
|
|
dos_state = 0; \
|
|
counter++; \
|
|
} else if (*cptr == '\r' && term == FF_MAC) { \
|
|
counter++; \
|
|
} else if (term == FF_DOS) { \
|
|
dos_state = 0; \
|
|
}
|
|
|
|
static enum file_format file2format(const char *filename)
|
|
{
|
|
FILE *ff;
|
|
char fbuf[4096];
|
|
char *first_cr, *first_nl;
|
|
enum file_format newline_format = FF_UNKNOWN;
|
|
|
|
if (!(ff = fopen(filename, "r"))) {
|
|
ast_log(LOG_ERROR, "Cannot open '%s': %s\n", filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
while (fgets(fbuf, sizeof(fbuf), ff)) {
|
|
first_cr = strchr(fbuf, '\r');
|
|
first_nl = strchr(fbuf, '\n');
|
|
|
|
if (!first_cr && !first_nl) {
|
|
continue;
|
|
}
|
|
|
|
if ((first_cr && !first_nl) || (first_cr && first_cr < first_nl)) {
|
|
|
|
if (first_nl && first_nl == first_cr + 1) {
|
|
newline_format = FF_DOS;
|
|
} else if (first_cr && first_cr == &fbuf[sizeof(fbuf) - 2]) {
|
|
/* Edge case: get it on the next pass */
|
|
fseek(ff, -1, SEEK_CUR);
|
|
continue;
|
|
} else {
|
|
newline_format = FF_MAC;
|
|
}
|
|
} else {
|
|
newline_format = FF_UNIX;
|
|
}
|
|
break;
|
|
}
|
|
fclose(ff);
|
|
return newline_format;
|
|
}
|
|
|
|
static int file_format(struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
|
|
{
|
|
enum file_format newline_format = file2format(data);
|
|
ast_str_set(buf, len, "%c", newline_format == FF_UNIX ? 'u' : newline_format == FF_DOS ? 'd' : newline_format == FF_MAC ? 'm' : 'x');
|
|
return 0;
|
|
}
|
|
|
|
static int file_read(struct ast_channel *chan, const char *cmd, char *data, struct ast_str **buf, ssize_t len)
|
|
{
|
|
FILE *ff;
|
|
int64_t offset = 0, length = LLONG_MAX;
|
|
enum file_format format = FF_UNKNOWN;
|
|
char fbuf[4096];
|
|
int64_t flength, i; /* iterator needs to be signed, so it can go negative and terminate the loop */
|
|
int64_t offset_offset = -1, length_offset = -1;
|
|
char dos_state = 0;
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(filename);
|
|
AST_APP_ARG(offset);
|
|
AST_APP_ARG(length);
|
|
AST_APP_ARG(options);
|
|
AST_APP_ARG(fileformat);
|
|
);
|
|
|
|
AST_STANDARD_APP_ARGS(args, data);
|
|
|
|
if (args.argc > 1) {
|
|
sscanf(args.offset, "%" SCNd64, &offset);
|
|
}
|
|
if (args.argc > 2) {
|
|
sscanf(args.length, "%" SCNd64, &length);
|
|
}
|
|
|
|
if (args.argc < 4 || !strchr(args.options, 'l')) {
|
|
/* Character-based mode */
|
|
off_t off_i;
|
|
|
|
if (!(ff = fopen(args.filename, "r"))) {
|
|
ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", args.filename, strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
if (fseeko(ff, 0, SEEK_END) < 0) {
|
|
ast_log(LOG_ERROR, "Cannot seek to end of '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
flength = ftello(ff);
|
|
|
|
if (offset < 0) {
|
|
fseeko(ff, offset, SEEK_END);
|
|
if ((offset = ftello(ff)) < 0) {
|
|
ast_log(AST_LOG_ERROR, "Cannot determine offset position of '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
}
|
|
if (length < 0) {
|
|
fseeko(ff, length, SEEK_END);
|
|
if ((length = ftello(ff)) - offset < 0) {
|
|
/* Eliminates all results */
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
} else if (length == LLONG_MAX) {
|
|
fseeko(ff, 0, SEEK_END);
|
|
length = ftello(ff);
|
|
}
|
|
|
|
ast_str_reset(*buf);
|
|
|
|
fseeko(ff, offset, SEEK_SET);
|
|
for (off_i = ftello(ff); off_i < flength && off_i < offset + length; off_i += sizeof(fbuf)) {
|
|
/* Calculate if we need to retrieve just a portion of the file in memory */
|
|
size_t toappend = sizeof(fbuf);
|
|
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
break;
|
|
}
|
|
|
|
/* Don't go past the length requested */
|
|
if (off_i + toappend > offset + length) {
|
|
toappend = MIN(offset + length - off_i, flength - off_i);
|
|
}
|
|
|
|
ast_str_append_substr(buf, len, fbuf, toappend);
|
|
}
|
|
fclose(ff);
|
|
return 0;
|
|
}
|
|
|
|
/* Line-based read */
|
|
if (args.argc == 5) {
|
|
if (tolower(args.fileformat[0]) == 'd') {
|
|
format = FF_DOS;
|
|
} else if (tolower(args.fileformat[0]) == 'm') {
|
|
format = FF_MAC;
|
|
} else if (tolower(args.fileformat[0]) == 'u') {
|
|
format = FF_UNIX;
|
|
}
|
|
}
|
|
|
|
if (format == FF_UNKNOWN) {
|
|
if ((format = file2format(args.filename)) == FF_UNKNOWN) {
|
|
ast_log(LOG_WARNING, "'%s' is not a line-based file\n", args.filename);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (offset < 0 && length <= offset) {
|
|
/* Length eliminates all content */
|
|
return -1;
|
|
} else if (offset == 0) {
|
|
offset_offset = 0;
|
|
}
|
|
|
|
if (!(ff = fopen(args.filename, "r"))) {
|
|
ast_log(LOG_ERROR, "Cannot open '%s': %s\n", args.filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
if (fseek(ff, 0, SEEK_END)) {
|
|
ast_log(LOG_ERROR, "Cannot seek to end of file '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
|
|
flength = ftello(ff);
|
|
|
|
if (length == LLONG_MAX) {
|
|
length_offset = flength;
|
|
}
|
|
|
|
/* For negative offset and/or negative length */
|
|
if (offset < 0 || length < 0) {
|
|
int64_t count = 0;
|
|
/* Start with an even multiple of fbuf, so at the end of reading with a
|
|
* 0 offset, we don't try to go past the beginning of the file. */
|
|
for (i = (flength / sizeof(fbuf)) * sizeof(fbuf); i >= 0; i -= sizeof(fbuf)) {
|
|
size_t end;
|
|
char *pos;
|
|
if (fseeko(ff, i, SEEK_SET)) {
|
|
ast_log(LOG_ERROR, "Cannot seek to offset %" PRId64 ": %s\n", i, strerror(errno));
|
|
}
|
|
end = fread(fbuf, 1, sizeof(fbuf), ff);
|
|
for (pos = (end < sizeof(fbuf) ? fbuf + end - 1 : fbuf + sizeof(fbuf) - 1); pos > fbuf - 1; pos--) {
|
|
LINE_COUNTER(pos, format, count);
|
|
|
|
if (length < 0 && count * -1 == length) {
|
|
length_offset = i + (pos - fbuf);
|
|
} else if (offset < 0 && count * -1 == (offset - 1)) {
|
|
/* Found our initial offset. We're done with reverse motion! */
|
|
if (format == FF_DOS) {
|
|
offset_offset = i + (pos - fbuf) + 2;
|
|
} else {
|
|
offset_offset = i + (pos - fbuf) + 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ((offset < 0 && offset_offset >= 0) || (offset >= 0 && length_offset >= 0)) {
|
|
break;
|
|
}
|
|
}
|
|
/* We're at the beginning, and the negative offset indicates the exact number of lines in the file */
|
|
if (offset < 0 && offset_offset < 0 && offset == count * -1) {
|
|
offset_offset = 0;
|
|
}
|
|
}
|
|
|
|
/* Positve line offset */
|
|
if (offset > 0) {
|
|
int64_t count = 0;
|
|
fseek(ff, 0, SEEK_SET);
|
|
for (i = 0; i < flength; i += sizeof(fbuf)) {
|
|
char *pos;
|
|
if (i + sizeof(fbuf) <= flength) {
|
|
/* Don't let previous values influence current counts, due to short reads */
|
|
memset(fbuf, 0, sizeof(fbuf));
|
|
}
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
for (pos = fbuf; pos < fbuf + sizeof(fbuf); pos++) {
|
|
LINE_COUNTER(pos, format, count);
|
|
|
|
if (count == offset) {
|
|
offset_offset = i + (pos - fbuf) + 1;
|
|
break;
|
|
}
|
|
}
|
|
if (offset_offset >= 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (offset_offset < 0) {
|
|
ast_log(LOG_ERROR, "Offset '%s' refers to before the beginning of the file!\n", args.offset);
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
|
|
ast_str_reset(*buf);
|
|
if (fseeko(ff, offset_offset, SEEK_SET)) {
|
|
ast_log(LOG_ERROR, "fseeko failed: %s\n", strerror(errno));
|
|
}
|
|
|
|
/* If we have both offset_offset and length_offset, then grabbing the
|
|
* buffer is simply a matter of just retrieving the file and adding it
|
|
* to buf. Otherwise, we need to run byte-by-byte forward until the
|
|
* length is complete. */
|
|
if (length_offset >= 0) {
|
|
ast_debug(3, "offset=%" PRId64 ", length=%" PRId64 ", offset_offset=%" PRId64 ", length_offset=%" PRId64 "\n", offset, length, offset_offset, length_offset);
|
|
for (i = offset_offset; i < length_offset; i += sizeof(fbuf)) {
|
|
if (fread(fbuf, 1, i + sizeof(fbuf) > flength ? flength - i : sizeof(fbuf), ff) < (i + sizeof(fbuf) > flength ? flength - i : sizeof(fbuf))) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
}
|
|
ast_debug(3, "Appending first %" PRId64" bytes of fbuf=%s\n", (int64_t)(i + sizeof(fbuf) > length_offset ? length_offset - i : sizeof(fbuf)), fbuf);
|
|
ast_str_append_substr(buf, len, fbuf, i + sizeof(fbuf) > length_offset ? length_offset - i : sizeof(fbuf));
|
|
}
|
|
} else if (length == 0) {
|
|
/* Nothing to do */
|
|
} else {
|
|
/* Positive line offset */
|
|
int64_t current_length = 0;
|
|
char dos_state = 0;
|
|
ast_debug(3, "offset=%" PRId64 ", length=%" PRId64 ", offset_offset=%" PRId64 ", length_offset=%" PRId64 "\n", offset, length, offset_offset, length_offset);
|
|
for (i = offset_offset; i < flength; i += sizeof(fbuf)) {
|
|
char *pos;
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
for (pos = fbuf; pos < fbuf + sizeof(fbuf); pos++) {
|
|
LINE_COUNTER(pos, format, current_length);
|
|
|
|
if (current_length == length) {
|
|
length_offset = i + (pos - fbuf) + 1;
|
|
break;
|
|
}
|
|
}
|
|
ast_debug(3, "length_offset=%" PRId64 ", length_offset - i=%" PRId64 "\n", length_offset, length_offset - i);
|
|
ast_str_append_substr(buf, len, fbuf, (length_offset >= 0) ? length_offset - i : (flength > i + sizeof(fbuf)) ? sizeof(fbuf) : flength - i);
|
|
|
|
if (length_offset >= 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose(ff);
|
|
return 0;
|
|
}
|
|
|
|
const char *format2term(enum file_format f) __attribute__((const));
|
|
const char *format2term(enum file_format f)
|
|
{
|
|
const char *term[] = { "", "\n", "\r\n", "\r" };
|
|
return term[f + 1];
|
|
}
|
|
|
|
static int file_write(struct ast_channel *chan, const char *cmd, char *data, const char *value)
|
|
{
|
|
AST_DECLARE_APP_ARGS(args,
|
|
AST_APP_ARG(filename);
|
|
AST_APP_ARG(offset);
|
|
AST_APP_ARG(length);
|
|
AST_APP_ARG(options);
|
|
AST_APP_ARG(format);
|
|
);
|
|
int64_t offset = 0, length = LLONG_MAX;
|
|
off_t flength, vlength;
|
|
size_t foplen = 0;
|
|
FILE *ff;
|
|
|
|
AST_STANDARD_APP_ARGS(args, data);
|
|
|
|
if (args.argc > 1) {
|
|
sscanf(args.offset, "%" SCNd64, &offset);
|
|
}
|
|
if (args.argc > 2) {
|
|
sscanf(args.length, "%" SCNd64, &length);
|
|
}
|
|
|
|
vlength = strlen(value);
|
|
|
|
if (args.argc < 4 || !strchr(args.options, 'l')) {
|
|
/* Character-based mode */
|
|
|
|
if (args.argc > 3 && strchr(args.options, 'a')) {
|
|
/* Append mode */
|
|
if (!(ff = fopen(args.filename, "a"))) {
|
|
ast_log(LOG_WARNING, "Cannot open file '%s' for appending: %s\n", args.filename, strerror(errno));
|
|
return 0;
|
|
}
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
return 0;
|
|
} else if (offset == 0 && length == LLONG_MAX) {
|
|
if (!(ff = fopen(args.filename, "w"))) {
|
|
ast_log(LOG_WARNING, "Cannot open file '%s' for writing: %s\n", args.filename, strerror(errno));
|
|
return 0;
|
|
}
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
return 0;
|
|
}
|
|
|
|
if (!(ff = fopen(args.filename, "r+"))) {
|
|
ast_log(LOG_WARNING, "Cannot open file '%s' for modification: %s\n", args.filename, strerror(errno));
|
|
return 0;
|
|
}
|
|
fseeko(ff, 0, SEEK_END);
|
|
flength = ftello(ff);
|
|
|
|
if (offset < 0) {
|
|
if (fseeko(ff, offset, SEEK_END)) {
|
|
ast_log(LOG_ERROR, "Cannot seek to offset of '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
if ((offset = ftello(ff)) < 0) {
|
|
ast_log(AST_LOG_ERROR, "Cannot determine offset position of '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (length < 0) {
|
|
length = flength - offset + length;
|
|
if (length < 0) {
|
|
ast_log(LOG_ERROR, "Length '%s' exceeds the file length. No data will be written.\n", args.length);
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
fseeko(ff, offset, SEEK_SET);
|
|
|
|
ast_debug(3, "offset=%s/%" PRId64 ", length=%s/%" PRId64 ", vlength=%" PRId64 ", flength=%" PRId64 "\n",
|
|
S_OR(args.offset, "(null)"), offset, S_OR(args.length, "(null)"), length, vlength, flength);
|
|
|
|
if (length == vlength) {
|
|
/* Simplest case, a straight replace */
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
} else if (length == LLONG_MAX) {
|
|
/* Simple truncation */
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
if (truncate(args.filename, offset + vlength)) {
|
|
ast_log(LOG_ERROR, "Unable to truncate the file: %s\n", strerror(errno));
|
|
}
|
|
} else if (length > vlength) {
|
|
/* More complex -- need to close a gap */
|
|
char fbuf[4096];
|
|
off_t cur;
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fseeko(ff, length - vlength, SEEK_CUR);
|
|
while ((cur = ftello(ff)) < flength) {
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
}
|
|
fseeko(ff, cur + vlength - length, SEEK_SET);
|
|
if (fwrite(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
/* Seek to where we stopped reading */
|
|
if (fseeko(ff, cur + sizeof(fbuf), SEEK_SET) < 0) {
|
|
/* Only reason for seek to fail is EOF */
|
|
break;
|
|
}
|
|
}
|
|
fclose(ff);
|
|
if (truncate(args.filename, flength - (length - vlength))) {
|
|
ast_log(LOG_ERROR, "Unable to truncate the file: %s\n", strerror(errno));
|
|
}
|
|
} else {
|
|
/* Most complex -- need to open a gap */
|
|
char fbuf[4096];
|
|
off_t lastwritten = flength + vlength - length;
|
|
|
|
/* Start reading exactly the buffer size back from the end. */
|
|
fseeko(ff, flength - sizeof(fbuf), SEEK_SET);
|
|
while (offset < ftello(ff)) {
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
/* Since the read moved our file ptr forward, we reverse, but
|
|
* seek an offset equal to the amount we want to extend the
|
|
* file by */
|
|
fseeko(ff, vlength - length - sizeof(fbuf), SEEK_CUR);
|
|
|
|
/* Note the location of this buffer -- we must not overwrite this position. */
|
|
lastwritten = ftello(ff);
|
|
|
|
if (fwrite(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
|
|
if (lastwritten < offset + sizeof(fbuf)) {
|
|
break;
|
|
}
|
|
/* Our file pointer is now either pointing to the end of the
|
|
* file (new position) or a multiple of the fbuf size back from
|
|
* that point. Move back to where we want to start reading
|
|
* again. We never actually try to read beyond the end of the
|
|
* file, so we don't have do deal with short reads, as we would
|
|
* when we're shortening the file. */
|
|
fseeko(ff, 2 * sizeof(fbuf) + vlength - length, SEEK_CUR);
|
|
}
|
|
|
|
/* Last part of the file that we need to preserve */
|
|
if (fseeko(ff, offset + length, SEEK_SET)) {
|
|
ast_log(LOG_WARNING, "Unable to seek to %" PRId64 " + %" PRId64 " != %" PRId64 "?)\n", offset, length, ftello(ff));
|
|
}
|
|
|
|
/* Doesn't matter how much we read -- just need to restrict the write */
|
|
ast_debug(1, "Reading at %" PRId64 "\n", ftello(ff));
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
}
|
|
fseek(ff, offset, SEEK_SET);
|
|
/* Write out the value, then write just up until where we last moved some data */
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
} else {
|
|
off_t curpos = ftello(ff);
|
|
foplen = lastwritten - curpos;
|
|
if (fwrite(fbuf, 1, foplen, ff) < foplen) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
}
|
|
fclose(ff);
|
|
}
|
|
} else {
|
|
enum file_format newline_format = FF_UNKNOWN;
|
|
|
|
/* Line mode */
|
|
if (args.argc == 5) {
|
|
if (tolower(args.format[0]) == 'u') {
|
|
newline_format = FF_UNIX;
|
|
} else if (tolower(args.format[0]) == 'm') {
|
|
newline_format = FF_MAC;
|
|
} else if (tolower(args.format[0]) == 'd') {
|
|
newline_format = FF_DOS;
|
|
}
|
|
}
|
|
if (newline_format == FF_UNKNOWN && (newline_format = file2format(args.filename)) == FF_UNKNOWN) {
|
|
ast_log(LOG_ERROR, "File '%s' not in line format\n", args.filename);
|
|
return -1;
|
|
}
|
|
|
|
if (strchr(args.options, 'a')) {
|
|
/* Append to file */
|
|
if (!(ff = fopen(args.filename, "a"))) {
|
|
ast_log(LOG_ERROR, "Unable to open '%s' for appending: %s\n", args.filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
} else if (!strchr(args.options, 'd') && fwrite(format2term(newline_format), 1, strlen(format2term(newline_format)), ff) < strlen(format2term(newline_format))) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
} else if (offset == 0 && length == LLONG_MAX) {
|
|
/* Overwrite file */
|
|
off_t truncsize;
|
|
if (!(ff = fopen(args.filename, "w"))) {
|
|
ast_log(LOG_ERROR, "Unable to open '%s' for writing: %s\n", args.filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
} else if (!strchr(args.options, 'd') && fwrite(format2term(newline_format), 1, strlen(format2term(newline_format)), ff) < strlen(format2term(newline_format))) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
if ((truncsize = ftello(ff)) < 0) {
|
|
ast_log(AST_LOG_ERROR, "Unable to determine truncate position of '%s': %s\n", args.filename, strerror(errno));
|
|
}
|
|
fclose(ff);
|
|
if (truncsize >= 0 && truncate(args.filename, truncsize)) {
|
|
ast_log(LOG_ERROR, "Unable to truncate file '%s': %s\n", args.filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
} else {
|
|
int64_t offset_offset = (offset == 0 ? 0 : -1), length_offset = -1, flength, i, current_length = 0;
|
|
char dos_state = 0, fbuf[4096];
|
|
|
|
if (offset < 0 && length < offset) {
|
|
/* Nonsense! */
|
|
ast_log(LOG_ERROR, "Length cannot specify a position prior to the offset\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!(ff = fopen(args.filename, "r+"))) {
|
|
ast_log(LOG_ERROR, "Cannot open '%s' for modification: %s\n", args.filename, strerror(errno));
|
|
return -1;
|
|
}
|
|
|
|
if (fseek(ff, 0, SEEK_END)) {
|
|
ast_log(LOG_ERROR, "Cannot seek to end of file '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
if ((flength = ftello(ff)) < 0) {
|
|
ast_log(AST_LOG_ERROR, "Cannot determine end position of file '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
|
|
/* For negative offset and/or negative length */
|
|
if (offset < 0 || length < 0) {
|
|
int64_t count = 0;
|
|
for (i = (flength / sizeof(fbuf)) * sizeof(fbuf); i >= 0; i -= sizeof(fbuf)) {
|
|
char *pos;
|
|
if (fseeko(ff, i, SEEK_SET)) {
|
|
ast_log(LOG_ERROR, "Cannot seek to offset %" PRId64 ": %s\n", i, strerror(errno));
|
|
}
|
|
if (i + sizeof(fbuf) >= flength) {
|
|
memset(fbuf, 0, sizeof(fbuf));
|
|
}
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read: %s\n", strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
for (pos = fbuf + sizeof(fbuf) - 1; pos > fbuf - 1; pos--) {
|
|
LINE_COUNTER(pos, newline_format, count);
|
|
|
|
if (length < 0 && count * -1 == length) {
|
|
length_offset = i + (pos - fbuf);
|
|
} else if (offset < 0 && count * -1 == (offset - 1)) {
|
|
/* Found our initial offset. We're done with reverse motion! */
|
|
if (newline_format == FF_DOS) {
|
|
offset_offset = i + (pos - fbuf) + 2;
|
|
} else {
|
|
offset_offset = i + (pos - fbuf) + 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if ((offset < 0 && offset_offset >= 0) || (offset >= 0 && length_offset >= 0)) {
|
|
break;
|
|
}
|
|
}
|
|
/* We're at the beginning, and the negative offset indicates the exact number of lines in the file */
|
|
if (offset < 0 && offset_offset < 0 && offset == count * -1) {
|
|
offset_offset = 0;
|
|
}
|
|
}
|
|
|
|
/* Positve line offset */
|
|
if (offset > 0) {
|
|
int64_t count = 0;
|
|
fseek(ff, 0, SEEK_SET);
|
|
for (i = 0; i < flength; i += sizeof(fbuf)) {
|
|
char *pos;
|
|
if (i + sizeof(fbuf) >= flength) {
|
|
memset(fbuf, 0, sizeof(fbuf));
|
|
}
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
for (pos = fbuf; pos < fbuf + sizeof(fbuf); pos++) {
|
|
LINE_COUNTER(pos, newline_format, count);
|
|
|
|
if (count == offset) {
|
|
offset_offset = i + (pos - fbuf) + 1;
|
|
break;
|
|
}
|
|
}
|
|
if (offset_offset >= 0) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (offset_offset < 0) {
|
|
ast_log(LOG_ERROR, "Offset '%s' refers to before the beginning of the file!\n", args.offset);
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
|
|
if (length == 0) {
|
|
length_offset = offset_offset;
|
|
} else if (length == LLONG_MAX) {
|
|
length_offset = flength;
|
|
}
|
|
|
|
/* Positive line length */
|
|
if (length_offset < 0) {
|
|
fseeko(ff, offset_offset, SEEK_SET);
|
|
for (i = offset_offset; i < flength; i += sizeof(fbuf)) {
|
|
char *pos;
|
|
if (i + sizeof(fbuf) >= flength) {
|
|
memset(fbuf, 0, sizeof(fbuf));
|
|
}
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
for (pos = fbuf; pos < fbuf + sizeof(fbuf); pos++) {
|
|
LINE_COUNTER(pos, newline_format, current_length);
|
|
|
|
if (current_length == length) {
|
|
length_offset = i + (pos - fbuf) + 1;
|
|
break;
|
|
}
|
|
}
|
|
if (length_offset >= 0) {
|
|
break;
|
|
}
|
|
}
|
|
if (length_offset < 0) {
|
|
/* Exceeds length of file */
|
|
ast_debug(3, "Exceeds length of file? length=%" PRId64 ", count=%" PRId64 ", flength=%" PRId64 "\n", length, current_length, flength);
|
|
length_offset = flength;
|
|
}
|
|
}
|
|
|
|
/* Have offset_offset and length_offset now */
|
|
if (length_offset - offset_offset == vlength + (strchr(args.options, 'd') ? 0 : strlen(format2term(newline_format)))) {
|
|
/* Simple case - replacement of text inline */
|
|
fseeko(ff, offset_offset, SEEK_SET);
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
} else if (!strchr(args.options, 'd') && fwrite(format2term(newline_format), 1, strlen(format2term(newline_format)), ff) < strlen(format2term(newline_format))) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
fclose(ff);
|
|
} else if (length_offset - offset_offset > vlength + (strchr(args.options, 'd') ? 0 : strlen(format2term(newline_format)))) {
|
|
/* More complex case - need to shorten file */
|
|
off_t cur;
|
|
int64_t length_length = length_offset - offset_offset;
|
|
size_t vlen = vlength + (strchr(args.options, 'd') ? 0 : strlen(format2term(newline_format)));
|
|
|
|
ast_debug(3, "offset=%s/%" PRId64 ", length=%s/%" PRId64 " (%" PRId64 "), vlength=%" PRId64 ", flength=%" PRId64 "\n",
|
|
args.offset, offset_offset, args.length, length_offset, length_length, vlength, flength);
|
|
|
|
fseeko(ff, offset_offset, SEEK_SET);
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
} else if (!strchr(args.options, 'd') && fwrite(format2term(newline_format), 1, vlen - vlength, ff) < vlen - vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
while ((cur = ftello(ff)) < flength) {
|
|
if (cur < 0) {
|
|
ast_log(AST_LOG_ERROR, "Unable to determine last write position for '%s': %s\n", args.filename, strerror(errno));
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
fseeko(ff, length_length - vlen, SEEK_CUR);
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
/* Seek to where we last stopped writing */
|
|
fseeko(ff, cur, SEEK_SET);
|
|
if (fwrite(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
}
|
|
fclose(ff);
|
|
if (truncate(args.filename, flength - (length_length - vlen))) {
|
|
ast_log(LOG_ERROR, "Truncation of file failed: %s\n", strerror(errno));
|
|
}
|
|
} else {
|
|
/* Most complex case - need to lengthen file */
|
|
size_t vlen = vlength + (strchr(args.options, 'd') ? 0 : strlen(format2term(newline_format)));
|
|
int64_t origlen = length_offset - offset_offset;
|
|
off_t lastwritten = flength + vlen - origlen;
|
|
|
|
ast_debug(3, "offset=%s/%" PRId64 ", length=%s/%" PRId64 ", vlength=%" PRId64 ", flength=%" PRId64 "\n",
|
|
args.offset, offset_offset, args.length, length_offset, vlength, flength);
|
|
|
|
fseeko(ff, flength - sizeof(fbuf), SEEK_SET);
|
|
while (offset_offset + sizeof(fbuf) < ftello(ff)) {
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
fseeko(ff, sizeof(fbuf) - vlen - origlen, SEEK_CUR);
|
|
if (fwrite(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf)) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
if ((lastwritten = ftello(ff) - sizeof(fbuf)) < offset_offset + sizeof(fbuf)) {
|
|
break;
|
|
}
|
|
fseeko(ff, 2 * sizeof(fbuf) + vlen - origlen, SEEK_CUR);
|
|
}
|
|
fseek(ff, length_offset, SEEK_SET);
|
|
if (fread(fbuf, 1, sizeof(fbuf), ff) < sizeof(fbuf) && !feof(ff)) {
|
|
ast_log(LOG_ERROR, "Short read?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
}
|
|
fseek(ff, offset_offset, SEEK_SET);
|
|
if (fwrite(value, 1, vlength, ff) < vlength) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
} else if (!strchr(args.options, 'd') && fwrite(format2term(newline_format), 1, strlen(format2term(newline_format)), ff) < strlen(format2term(newline_format))) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
fclose(ff);
|
|
return -1;
|
|
} else {
|
|
off_t curpos = ftello(ff);
|
|
foplen = lastwritten - curpos;
|
|
if (fwrite(fbuf, 1, foplen, ff) < foplen) {
|
|
ast_log(LOG_ERROR, "Short write?!!\n");
|
|
}
|
|
}
|
|
fclose(ff);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ast_custom_function env_function = {
|
|
.name = "ENV",
|
|
.read = env_read,
|
|
.write = env_write
|
|
};
|
|
|
|
static struct ast_custom_function stat_function = {
|
|
.name = "STAT",
|
|
.read = stat_read,
|
|
.read_max = 12,
|
|
};
|
|
|
|
static struct ast_custom_function file_function = {
|
|
.name = "FILE",
|
|
.read2 = file_read,
|
|
.write = file_write,
|
|
};
|
|
|
|
static struct ast_custom_function file_count_line_function = {
|
|
.name = "FILE_COUNT_LINE",
|
|
.read2 = file_count_line,
|
|
.read_max = 12,
|
|
};
|
|
|
|
static struct ast_custom_function file_format_function = {
|
|
.name = "FILE_FORMAT",
|
|
.read2 = file_format,
|
|
.read_max = 2,
|
|
};
|
|
|
|
static int unload_module(void)
|
|
{
|
|
int res = 0;
|
|
|
|
res |= ast_custom_function_unregister(&env_function);
|
|
res |= ast_custom_function_unregister(&stat_function);
|
|
res |= ast_custom_function_unregister(&file_function);
|
|
res |= ast_custom_function_unregister(&file_count_line_function);
|
|
res |= ast_custom_function_unregister(&file_format_function);
|
|
|
|
return res;
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
int res = 0;
|
|
|
|
res |= ast_custom_function_register(&env_function);
|
|
res |= ast_custom_function_register_escalating(&stat_function, AST_CFE_READ);
|
|
res |= ast_custom_function_register_escalating(&file_function, AST_CFE_BOTH);
|
|
res |= ast_custom_function_register_escalating(&file_count_line_function, AST_CFE_READ);
|
|
res |= ast_custom_function_register_escalating(&file_format_function, AST_CFE_READ);
|
|
|
|
return res;
|
|
}
|
|
|
|
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Environment/filesystem dialplan functions");
|