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mbuni/mbuni/mmlib/mms_util.c

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/*
* Mbuni - Open Source MMS Gateway
*
* Misc. functions
*
* Copyright (C) 2003 - 2005, Digital Solutions Ltd. - http://www.dsmagic.com
*
* Paul Bagyenda <bagyenda@dsmagic.com>
*
* This program is free software, distributed under the terms of
* the GNU General Public License, with a few exceptions granted (see LICENSE)
*/
#include <sys/file.h>
#include <ctype.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <errno.h>
#include <dlfcn.h>
#include <strings.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "mms_util.h"
#include "mms_queue.h"
#include "mms_uaprof.h"
Octstr *_mms_cfg_getx(mCfgGrp *grp, Octstr *item)
{
Octstr *v = mms_cfg_get(grp, item);
return v ? v : octstr_create("");
}
int mms_load_core_settings(mCfgGrp *cgrp)
{
Octstr *log, *alog;
Octstr *http_proxy_host;
long loglevel;
if (cgrp == NULL)
panic(0,"Missing required group `core' in config file!");
/* Set the log file. */
log = mms_cfg_get(cgrp, octstr_imm("log-file"));
if (log != NULL) {
if (mms_cfg_get_int(cgrp, octstr_imm("log-level"), &loglevel) == -1)
loglevel = 0;
log_open(octstr_get_cstr(log), loglevel, GW_NON_EXCL);
octstr_destroy(log);
}
/* Get access log and open it. */
alog = mms_cfg_get(cgrp, octstr_imm("access-log"));
if (alog) {
alog_open(octstr_get_cstr(alog), 1, 1);
octstr_destroy(alog);
}
/* look for http proxy. If set, use it. */
if ((http_proxy_host = mms_cfg_get(cgrp, octstr_imm("http-proxy-host"))) != NULL) {
Octstr *username = mms_cfg_get(cgrp,
octstr_imm("http-proxy-username"));
Octstr *password = mms_cfg_get(cgrp,
octstr_imm("http-proxy-password"));
List *exceptions = mms_cfg_get_list(cgrp,
octstr_imm("http-proxy-exceptions"));
Octstr *except_regex = mms_cfg_get(cgrp,
octstr_imm("http-proxy-exceptions-regex"));
long http_proxy_port = -1;
mms_cfg_get_int(cgrp, octstr_imm("http-proxy-port"), &http_proxy_port);
if (http_proxy_port > 0)
http_use_proxy(http_proxy_host, http_proxy_port,
exceptions, username, password, except_regex);
octstr_destroy(http_proxy_host);
octstr_destroy(username);
octstr_destroy(password);
octstr_destroy(except_regex);
gwlist_destroy(exceptions, octstr_destroy_item);
}
#ifdef HAVE_LIBSSL
/* We expect that gwlib_init() has been called already, so only need
* to setup cert files.
* -- adapted from gwlib/conn.c
*/
{
Octstr *ssl_client_certkey_file = NULL;
Octstr *ssl_server_cert_file = NULL;
Octstr *ssl_server_key_file = NULL;
Octstr *ssl_trusted_ca_file = NULL;
/*
* check if SSL is desired for HTTP servers and then
* load SSL client and SSL server public certificates
* and private keys
*/
ssl_client_certkey_file = mms_cfg_get(cgrp, octstr_imm("ssl-client-certkey-file"));
if (ssl_client_certkey_file != NULL)
use_global_client_certkey_file(ssl_client_certkey_file);
ssl_server_cert_file = mms_cfg_get(cgrp, octstr_imm("ssl-server-cert-file"));
ssl_server_key_file = mms_cfg_get(cgrp, octstr_imm("ssl-server-key-file"));
if (ssl_server_cert_file != NULL && ssl_server_key_file != NULL)
use_global_server_certkey_file(ssl_server_cert_file,
ssl_server_key_file);
ssl_trusted_ca_file = mms_cfg_get(cgrp, octstr_imm("ssl-trusted-ca-file"));
use_global_trusted_ca_file(ssl_trusted_ca_file);
octstr_destroy(ssl_client_certkey_file);
octstr_destroy(ssl_server_cert_file);
octstr_destroy(ssl_server_key_file);
octstr_destroy(ssl_trusted_ca_file);
}
#endif
return 0;
}
Octstr *mms_maketransid(char *qf, Octstr *mmscname)
{
Octstr *res;
Octstr *x, *y = NULL;
static int ct;
if (!qf)
x = octstr_format("msg.%ld.x%d.%d.%d",
(long)time(NULL) % 10000, (++ct % 1000), getpid()%100, random()%100);
else
x = octstr_create(qf);
res = octstr_format("%S@%S", mmscname, x);
octstr_destroy(x);
octstr_destroy(y);
return res;
}
extern Octstr *mms_getqf_fromtransid(Octstr *transid)
{
int i;
if (transid == NULL)
return NULL;
i = octstr_search_char(transid, '@', 0);
return (i >= 0) ? octstr_copy(transid, i+1, octstr_len(transid)) : octstr_duplicate(transid);
}
Octstr *mms_isodate(time_t t)
{
Octstr *current_time;
struct tm now;
now = gw_gmtime(t);
current_time = octstr_format("%04d-%02d-%02dT%02d:%02d:%02dZ",
now.tm_year + 1900, now.tm_mon + 1,
now.tm_mday, now.tm_hour, now.tm_min,
now.tm_sec);
return current_time;
}
void mms_lib_init(void)
{
gwlib_init();
mms_strings_init();
}
void mms_lib_shutdown(void)
{
mms_strings_shutdown();
gwlib_shutdown();
}
static void strip_quotes(Octstr *s)
{
int l = s ? octstr_len(s) : 0;
if (l == 0)
return;
if (octstr_get_char(s, 0) == '"') {
octstr_delete(s, 0, 1);
l--;
}
if (octstr_get_char(s, l-1) == '"')
octstr_delete(s, l-1, 1);
}
List *get_value_parameters(Octstr *params)
{
int i,n, k = 0;
List *h = http_create_empty_headers();
Octstr *xparams = octstr_duplicate(params);
octstr_format_append(xparams, ";"); /* So parsing is easier. (aka cheap hack) */
for (i = 0, n = octstr_len(xparams); i < n; i++) {
int c = octstr_get_char(xparams, i);
if (c == ';') {
int j = octstr_search_char(xparams, '=', k);
Octstr *name, *value;
if (j > 0 && j < i) {
name = octstr_copy(xparams, k, j - k);
value = octstr_copy(xparams, j+1,i-j-1);
octstr_strip_blanks(name);
octstr_strip_blanks(value);
strip_quotes(value);
if (octstr_len(name) > 0)
http_header_add(h,
octstr_get_cstr(name),
octstr_get_cstr(value));
octstr_destroy(name);
octstr_destroy(value);
}
k = i + 1;
} else if (c == '"')
i += http_header_quoted_string_len(xparams, i) - 1;
}
octstr_destroy(xparams);
return h;
}
int split_header_value(Octstr *value, Octstr **base_value, Octstr **params)
{
int i, n;
for (i = 0, n = octstr_len(value); i < n; i++) {
int c = octstr_get_char(value, i);
if (c == ';')
break;
else if (c == '"')
i += http_header_quoted_string_len(value, i) - 1;
}
*base_value = octstr_duplicate(value);
if (i < n) {
*params = octstr_copy(value, i+1, octstr_len(value));
octstr_delete(*base_value, i, octstr_len(*base_value));
} else
*params = octstr_create("");
return 0;
}
int get_content_type(List *hdrs, Octstr **type, Octstr **params)
{
Octstr *v;
v = http_header_find_first(hdrs, "Content-Type");
*params =NULL;
if (!v) {
*type = octstr_create("application/octet-stream");
*params = octstr_create("");
return -1;
}
split_header_value(v, type, params);
octstr_destroy(v);
return 0;
}
static int needs_quotes(Octstr *s)
{
int i, n;
if (!s)
return 0;
for (i = 0, n = octstr_len(s); i<n; i++) {
int ch = octstr_get_char(s,i);
if (isspace(ch) || ch == '=' || ch == ';' || ch == '<' || ch == '>')
return 1;
}
return 0;
}
Octstr *make_value_parameters(List *params)
{
Octstr *s = octstr_create(""), *name, *value;
int i, n;
for (i = 0, n = params ? gwlist_len(params) : 0; i<n; i++) {
int space;
http_header_get(params, i, &name, &value);
space = needs_quotes(value);
octstr_format_append(s, "%s%S=%s%S%s",
(i==0) ? "" : "; ",
name,
(space) ? "\"" : "",
value,
(space) ? "\"" : "");
octstr_destroy(name);
octstr_destroy(value);
}
return s;
}
/* Take each header with a comma separated set of values (for To,Cc,Bcc),
* re-create as a series of header/value pairs.
* Remove all non-conformant headers (e.g. old unix-style from
*/
void unpack_mimeheaders(MIMEEntity *mm)
{
int i, n;
List *h = http_create_empty_headers();
List *headers = _x_mime_entity_headers(mm);
for (i = 0, n = gwlist_len(headers); i<n; i++) {
Octstr *header = NULL, *value = NULL;
List *l = NULL;
int j, m;
int skip;
http_header_get(headers, i, &header, &value);
if (header == NULL ||
octstr_str_compare(header, "X-Unknown") == 0 ||
octstr_search_chars(header, octstr_imm(" \n\t"), 0) >= 0) /* Don't allow space in the name. */
goto loop;
if (octstr_case_compare(header, octstr_imm("Cc")) == 0 ||
octstr_case_compare(header, octstr_imm("To")) == 0 ||
octstr_case_compare(header, octstr_imm("Bcc")) == 0)
skip = 0;
else
skip = 1;
/* XXX This may not be safe. Need to skip over quotes. */
if (!skip && octstr_search_char(value, ',', 0) > 0 &&
(l = http_header_split_value(value)) != NULL &&
gwlist_len(l) > 1)
for (j = 0, m = gwlist_len(l); j<m; j++)
http_header_add(h, octstr_get_cstr(header),
octstr_get_cstr(gwlist_get(l, j)));
else
http_header_add(h, octstr_get_cstr(header),
octstr_get_cstr(value));
if (l) gwlist_destroy(l, (gwlist_item_destructor_t *)octstr_destroy);
loop:
if (header) octstr_destroy(header);
if (value) octstr_destroy(value);
}
mime_replace_headers(mm, h);
http_destroy_headers(headers);
http_destroy_headers(h);
}
/* Undo base64 content coding for mime entities that need it. */
void unbase64_mimeparts(MIMEEntity *m)
{
int i, n;
if ((n = mime_entity_num_parts(m)) > 0)
for (i = 0; i<n; i++) {
MIMEEntity *x = mime_entity_get_part(m, i);
unbase64_mimeparts(x);
mime_entity_replace_part(m, i, x);
mime_entity_destroy(x);
}
else { /* A non-multipart message .*/
List *headers = _x_mime_entity_headers(m);
Octstr *ctype = http_header_value(headers, octstr_imm("Content-Type"));
Octstr *te = http_header_value(headers, octstr_imm("Content-Transfer-Encoding"));
if (ctype && te &&
octstr_case_compare(te,octstr_imm("base64")) == 0) {
Octstr *s = mime_entity_body(m);
octstr_base64_to_binary(s);
mime_entity_set_body(m, s);
octstr_destroy(s);
}
http_header_remove_all(headers, "Content-Transfer-Encoding"); /* Remove it in all cases (?).*/
mime_replace_headers(m, headers);
/* XXX may be we should deal with other transfer encodings here as well... */
if (ctype)
octstr_destroy(ctype);
if (te)
octstr_destroy(te);
http_destroy_headers(headers);
}
}
int _mms_gw_isprint(int c)
{
return isprint(c) || isspace(c);
}
/* Change content coding for mime entities that need it. */
void base64_mimeparts(MIMEEntity *m)
{
int i, n;
if ((n = mime_entity_num_parts(m)) > 0)
for (i = 0; i<n; i++) {
MIMEEntity *x = mime_entity_get_part(m, i);
base64_mimeparts(x);
mime_entity_replace_part(m, i, x);
mime_entity_destroy(x);
}
else { /* A non-multipart message .*/
List *headers = _x_mime_entity_headers(m);
Octstr *ctype = http_header_value(headers, octstr_imm("Content-Type"));
Octstr *te = http_header_value(headers, octstr_imm("Content-Transfer-Encoding"));
Octstr *body = mime_entity_body(m);
if (ctype && !te &&
(body && octstr_check_range(body, 0, octstr_len(body), _mms_gw_isprint) == 0)) {
octstr_binary_to_base64(body);
http_header_add(headers, "Content-Transfer-Encoding", "base64");
mime_entity_set_body(m, body);
mime_replace_headers(m, headers);
}
if (ctype)
octstr_destroy(ctype);
if (te)
octstr_destroy(te);
octstr_destroy(body);
http_destroy_headers(headers);
}
}
static void addmmscname(Octstr *s, Octstr *myhostname)
{
int j;
int len = octstr_len(s);
if (octstr_search_char(s, '@', 0) >= 0)
return; /* Nothing to do. */
j = octstr_case_search(s, octstr_imm("/TYPE=PLMN"), 0);
if (j > 0 && j - 1 + sizeof "/TYPE=PLMN" == len) { /* A proper number. */
octstr_delete(s, j, -1 + sizeof "/TYPE=PLMN"); /* XXX We strip off /TYPE=PLMN, should we ? */
octstr_format_append(s, "@%S", myhostname);
}
}
static int send2email(Octstr *to, Octstr *from, Octstr *subject,
Octstr *msgid,
MIMEEntity *m, int append_hostname, Octstr **error,
char *sendmail_cmd, Octstr *myhostname)
{
Octstr *s;
FILE *f;
int ret = MMS_SEND_OK, i;
Octstr *cmd = octstr_create("");
List *headers = mime_entity_headers(m); /* we don't want the mime version header removed. */
if (append_hostname) { /* Add our hostname to all phone numbers. */
int i, n;
List *l = http_create_empty_headers();
Octstr *xfrom = http_header_value(headers, octstr_imm("From"));
List *lto = http_header_find_all(headers, "To");
List *lcc = http_header_find_all(headers, "Cc");
if (xfrom) {
addmmscname(xfrom, myhostname);
http_header_add(l, "From", octstr_get_cstr(xfrom));
octstr_destroy(xfrom);
}
http_header_remove_all(headers, "From");
for (i = 0, n = gwlist_len(lto); i < n; i++) {
Octstr *name, *value;
http_header_get(lto, i, &name, &value);
if (!value || !name ||
octstr_case_compare(name, octstr_imm("To")) != 0)
goto loop;
addmmscname(value, myhostname);
http_header_add(l, "To", octstr_get_cstr(value));
loop:
if (value) octstr_destroy(value);
if (name) octstr_destroy(name);
}
http_destroy_headers(lto);
http_header_remove_all(headers, "To");
for (i = 0, n = gwlist_len(lcc); i < n; i++) {
Octstr *name, *value;
http_header_get(lcc, i, &name, &value);
if (!value || !name ||
octstr_case_compare(name, octstr_imm("Cc")) != 0)
goto loop2;
addmmscname(value, myhostname);
http_header_add(l, "Cc", octstr_get_cstr(value));
loop2:
if (value) octstr_destroy(value);
if (name) octstr_destroy(name);
}
http_destroy_headers(lcc);
http_header_remove_all(headers, "Cc");
http_append_headers(headers, l); /* combine old with new. */
http_destroy_headers(l);
}
/* Pack headers, get string rep of mime entity. */
http_header_pack(headers);
mime_replace_headers(m, headers);
s = mime_entity_to_octstr(m);
/*
* Make the command: Transpose % formatting characters:
* f - from address
* t - recipient
* s - subject
* m - message id
*/
i = 0;
for (;;) {
Octstr *tmp;
while (sendmail_cmd[i]) {
char c = sendmail_cmd[i];
if (c == '%' && sendmail_cmd[i + 1])
break;
octstr_append_char(cmd, c);
i++;
}
if (!sendmail_cmd[i])
break;
switch(sendmail_cmd[i+1]) {
case 't':
tmp = octstr_duplicate(to);
escape_shell_chars(tmp);
octstr_append(cmd, tmp);
octstr_destroy(tmp);
break;
case 'f':
if (append_hostname) {
Octstr *xfrom = octstr_duplicate(from);
addmmscname(xfrom, myhostname);
escape_shell_chars(xfrom);
octstr_append(cmd, xfrom);
octstr_destroy(xfrom);
} else {
tmp = octstr_duplicate(from);
escape_shell_chars(tmp);
octstr_append(cmd, tmp);
octstr_destroy(tmp);
}
break;
case 's':
tmp = octstr_duplicate(subject);
escape_shell_chars(tmp);
octstr_append(cmd, subject);
octstr_destroy(tmp);
break;
case 'm':
tmp = octstr_duplicate(msgid);
escape_shell_chars(tmp);
octstr_append(cmd, msgid);
octstr_destroy(tmp);
break;
case '%':
octstr_format_append(cmd, "%%");
break;
default:
octstr_format_append(cmd, "%%%c", sendmail_cmd[i+1]);
break;
}
i += 2;
}
debug("mms.sendtoemail", 0, "preparing to execute %s to send to email: ", octstr_get_cstr(cmd));
if ((f = popen(octstr_get_cstr(cmd), "w")) == NULL) {
*error = octstr_format("popen failed for %S: %d: %s",
cmd, errno, strerror(errno));
ret = MMS_SEND_ERROR_TRANSIENT;
goto done;
}
if (octstr_print(f, s) < 0) {
*error = octstr_format("send email failed in octstr_print %d: %s",
errno, strerror(errno));
pclose(f);
ret = MMS_SEND_ERROR_TRANSIENT;
goto done;
}
if ((ret = pclose(f)) != 0) {
*error = octstr_format("Send email command returned non-zero %d: errno=%s",
ret, strerror(errno));
ret = MMS_SEND_ERROR_TRANSIENT;
} else
ret = MMS_SEND_OK;
done:
http_destroy_headers(headers);
octstr_destroy(cmd);
octstr_destroy(s);
return ret;
}
/* Send this message to email recipient. */
int mms_sendtoemail(Octstr *from, Octstr *to,
Octstr *subject, Octstr *msgid,
MmsMsg *msg, int dlr, Octstr **error, char *sendmail_cmd,
Octstr *myhostname,
int trans_msg,
int trans_smil, char *txt, char *html,
int append_hostname)
{
MIMEEntity *m = NULL;
List *headers = NULL;
List *newhdrs = http_create_empty_headers();
int ret;
if (!to ||
octstr_search_char(to, '@', 0) < 0) {
*error = octstr_format("Invalid email address %S!", to);
return MMS_SEND_ERROR_FATAL;
}
if (!trans_msg)
m = mms_tomime(msg,0);
else
if ((ret = mms_format_special(msg, trans_smil, txt, html, &m)) < 0 ||
m == NULL) {
warning(0, "MMS: send2email failed to format message (msg=%s,ret=%d)",
m ? "OK" : "Not transformed",ret);
return -ret;
}
base64_mimeparts(m); /* make sure parts are base64 formatted. */
/* Before we send it, we insert some email friendly headers if they are missing. */
http_header_add(newhdrs, "Subject", subject ? octstr_get_cstr(subject) : "MMS Message");
http_header_add(newhdrs, "From", octstr_get_cstr(from));
http_header_add(newhdrs, "To", octstr_get_cstr(to));
http_header_add(newhdrs, "Message-ID", msgid ? octstr_get_cstr(msgid) : "");
http_header_add(newhdrs, "MIME-Version", "1.0");
headers = _x_mime_entity_headers(m);
http_header_combine(headers, newhdrs);
mime_replace_headers(m, headers);
http_destroy_headers(headers);
http_destroy_headers(newhdrs);
ret = send2email(to, from, subject, msgid, m, append_hostname, error, sendmail_cmd, myhostname);
mime_entity_destroy(m);
return ret;
}
void mms_log2(char *logmsg, Octstr *from, Octstr *to,
int msize, Octstr *msgid,
Octstr *acct,
Octstr *viaproxy,
char *interface, Octstr *ua, Octstr *mmboxloc)
{
List *l;
if (to) {
l = gwlist_create();
gwlist_append(l, to);
} else
l = NULL;
mms_log(logmsg, from,l,msize,msgid,acct,viaproxy,interface,ua,mmboxloc);
if (l)
gwlist_destroy(l, NULL);
}
void mms_log(char *logmsg, Octstr *from, List *to,
int msize, Octstr *msgid,
Octstr *acct,
Octstr *viaproxy,
char *interface, Octstr *ua, Octstr *mmboxloc)
{
Octstr *xto = octstr_create("");
int i, n = to ? gwlist_len(to) : 0;
for (i = 0; i < n; i++)
octstr_format_append(xto,
"%s%S",
(i == 0) ? "" : ", ",
gwlist_get(to,i));
alog("%s MMS [INT:%s] [ACT:%s] [MMSC:%s] [from:%s] [to:%s] [msgid:%s] [size=%d] [UA:%s] [MMBox:%s]",
logmsg, interface,
acct ? octstr_get_cstr(acct) : "",
viaproxy ? octstr_get_cstr(viaproxy) : "",
from ? octstr_get_cstr(from) : "",
octstr_get_cstr(xto),
msgid ? octstr_get_cstr(msgid) : "",
msize,
ua ? octstr_get_cstr(ua) : "",
mmboxloc ? octstr_get_cstr(mmboxloc) : "");
octstr_destroy(xto);
}
static int lockfile(int fd, int shouldblock)
{
int n, stop;
unsigned flg = shouldblock ? 0 : LOCK_NB;
do {
n = flock(fd, LOCK_EX|flg);
if (n < 0) {
if (errno == EINTR)
stop = 0;
else
stop = 1;
} else
stop = 1;
} while (!stop);
return (n == 0) ? 0 : errno;
}
static int check_lock(int fd, char *fname)
{
struct stat fs = {0}, ds = {0};
/* You might grab a lock on a file, but the file
* might be changed just before you grabbed the lock. Detect that and fail..
*/
if (fstat(fd, &ds) < 0 ||
stat(fname, &fs) < 0 ||
ds.st_nlink != fs.st_nlink ||
memcmp(&ds.st_dev,&fs.st_dev, sizeof ds.st_dev) != 0 ||
memcmp(&ds.st_ino,&fs.st_ino, sizeof ds.st_ino) != 0 ||
ds.st_uid != fs.st_uid ||
ds.st_gid != fs.st_gid ||
ds.st_size != fs.st_size)
return -1;
else
return 0;
}
int mm_lockfile(int fd, char *fname, int shouldblock)
{
int ret = lockfile(fd,shouldblock);
if (ret != 0 ||
(ret = check_lock(fd,fname)) != 0)
return ret;
return 0;
}
void mms_collect_envdata_from_msgheaders(List *mh, List **xto,
Octstr **subject,
Octstr **otransid, time_t *expiryt,
time_t *deliveryt, long default_msgexpiry)
{
Octstr *s;
List *l = http_header_find_all(mh, "To");
if (l) {
int i, n;
for (i = 0, n = gwlist_len(l); i<n; i++) {
Octstr *name, *value;
http_header_get(l, i, &name, &value);
gwlist_append(*xto, value);
octstr_destroy(name);
}
http_destroy_headers(l);
}
l = http_header_find_all(mh, "Cc");
if (l) {
int i, n;
for (i = 0, n = gwlist_len(l); i<n; i++) {
Octstr *name, *value;
http_header_get(l, i, &name, &value);
gwlist_append(*xto, value);
octstr_destroy(name);
}
http_destroy_headers(l);
}
l = http_header_find_all(mh, "Bcc");
if (l) {
int i, n;
for (i = 0, n = gwlist_len(l); i<n; i++) {
Octstr *name, *value;
http_header_get(l, i, &name, &value);
gwlist_append(*xto, value);
octstr_destroy(name);
}
http_destroy_headers(l);
}
/* Find expiry and delivery times */
if (expiryt) {
s = http_header_value(mh, octstr_imm("X-Mms-Expiry"));
if (s) {
*expiryt = date_parse_http(s);
octstr_destroy(s);
} else
*expiryt = time(NULL) + default_msgexpiry;
}
if (deliveryt) {
s = http_header_value(mh, octstr_imm("X-Mms-Delivery-Time"));
if (s) {
*deliveryt = date_parse_http(s);
octstr_destroy(s);
} else
*deliveryt = 0;
}
if (subject)
*subject = http_header_value(mh, octstr_imm("Subject"));
if (otransid)
*otransid = http_header_value(mh, octstr_imm("X-Mms-Transaction-ID"));
}
unsigned long _mshash(char *s)
{
unsigned h = 0;
while (*s) {
unsigned int ch = tolower(*s);
s++;
h += ((unsigned)(ch) << 4) + 1249;
}
return h;
}
int isphonenum(Octstr *s)
{
int i = 0, n = octstr_len(s);
char *cs;
if (s && octstr_len(s) >= 1 &&
octstr_get_cstr(s)[0] == '+')
i++;
for ( cs = octstr_get_cstr(s); i<n; i++)
if (!gw_isdigit(cs[i]))
return 0;
return 1;
}
/* Doesn't handle IP addresses. */
void _mms_fixup_address(Octstr *address)
{
int i;
if (!address) return;
i = octstr_search_char(address, '@', 0);
if (i>0)
return;
i = octstr_search(address, octstr_imm("/TYPE="), 0);
if (i > 0)
return;
if (isphonenum(address))
octstr_append(address, octstr_imm("/TYPE=PLMN"));
else
octstr_append(address, octstr_imm("@unknown"));
}
/* compare, reversed result! */
static int comp_fn(void *item, void *pattern)
{
return (octstr_case_compare(item, pattern) == 0) ? 1 : 0;
}
int is_allowed_host(Octstr *host, Octstr *host_list)
{
List *l;
int ret;
gw_assert(host_list);
gw_assert(host);
l = octstr_split(host_list, octstr_imm(";"));
ret = (gwlist_search(l, host, comp_fn) != NULL) ? 1 : 0;
gwlist_destroy(l, (void *)octstr_destroy);
return ret;
}
#define SHELLCHARS "'|\"()[]{}$&!?*><%`\n \t\\"
void escape_shell_chars(Octstr *str)
{
Octstr *tmp;
int i, n;
octstr_strip_blanks(str);
tmp = octstr_duplicate(str);
octstr_delete(str, 0, octstr_len(str));
for (i = 0, n = octstr_len(tmp); i < n; i++) {
int ch = octstr_get_char(tmp,i);
if (strchr(SHELLCHARS, ch) != NULL)
octstr_append_char(str, '\\');
octstr_append_char(str, ch);
}
octstr_destroy(tmp);
}
int parse_cgivars(List *request_headers, Octstr *request_body,
List **cgivars, List **cgivar_ctypes)
{
Octstr *ctype = NULL, *charset = NULL;
int ret = 0;
if (request_body == NULL ||
octstr_len(request_body) == 0 || cgivars == NULL)
return 0; /* Nothing to do, this is a normal GET request. */
http_header_get_content_type(request_headers, &ctype, &charset);
if (*cgivars == NULL)
*cgivars = gwlist_create();
if (*cgivar_ctypes == NULL)
*cgivar_ctypes = gwlist_create();
if (!ctype) {
warning(0, "MMS: Parse CGI Vars: Missing Content Type!");
ret = -1;
goto done;
}
if (octstr_case_compare(ctype, octstr_imm("application/x-www-form-urlencoded")) == 0) {
/* This is a normal POST form */
List *l = octstr_split(request_body, octstr_imm("&"));
Octstr *v;
while ((v = gwlist_extract_first(l)) != NULL) {
List *r = octstr_split(v, octstr_imm("="));
if (gwlist_len(r) == 0)
warning(0, "MMS: Parse CGI Vars: Missing CGI var name/value in POST data: %s",
octstr_get_cstr(request_body));
else {
HTTPCGIVar *x = gw_malloc(sizeof *x);
x->name = gwlist_extract_first(r);
x->value = gwlist_extract_first(r);
if (!x->value)
x->value = octstr_imm("");
octstr_strip_blanks(x->name);
octstr_strip_blanks(x->value);
octstr_url_decode(x->name);
octstr_url_decode(x->value);
gwlist_append(*cgivars, x);
}
octstr_destroy(v);
gwlist_destroy(r, octstr_destroy_item);
}
gwlist_destroy(l, NULL);
} else if (octstr_case_compare(ctype, octstr_imm("multipart/form-data")) == 0) {
/* multi-part form data */
MIMEEntity *m = mime_http_to_entity(request_headers, request_body);
int i, n;
if (!m) {
warning(0, "MMS: Parse CGI Vars: Failed to parse multipart/form-data body: %s",
octstr_get_cstr(request_body));
ret = -1;
goto done;
}
/* Go through body parts, pick out what we need. */
for (i = 0, n = mime_entity_num_parts(m); i < n; i++) {
MIMEEntity *mp = mime_entity_get_part(m, i);
List *headers = _x_mime_entity_headers(mp);
Octstr *body = mime_entity_body(mp);
Octstr *ct = http_header_value(headers,
octstr_imm("Content-Type"));
Octstr *cd = http_header_value(headers,
octstr_imm("Content-Disposition"));
Octstr *name = http_get_header_parameter(cd, octstr_imm("name"));
if (name) {
HTTPCGIVar *x = gw_malloc(sizeof *x);
/* Strip quotes */
if (octstr_get_char(name, 0) == '"') {
octstr_delete(name, 0, 1);
octstr_truncate(name, octstr_len(name) - 1);
}
x->name = octstr_duplicate(name);
x->value = octstr_duplicate(body);
gwlist_append(*cgivars, x);
if (ct) { /* If the content type is set, use it. */
x = gw_malloc(sizeof *x);
x->name = octstr_duplicate(name);
x->value = octstr_duplicate(ct);
gwlist_append(*cgivar_ctypes, x);
}
octstr_destroy(name);
}
if (ct)
octstr_destroy(ct);
if (cd)
octstr_destroy(cd);
octstr_destroy(body);
http_destroy_headers(headers);
mime_entity_destroy(mp);
}
mime_entity_destroy(m);
} else /* else it is nothing that we know about, so simply go away... */
ret = -1;
done:
if (ctype)
octstr_destroy(ctype);
if (charset)
octstr_destroy(charset);
return ret;
}
/* We need this because of boundary element adding bug in gwlib/mime.c */
List *_x_mime_entity_headers(MIMEEntity *m)
{
List *h = mime_entity_headers(m);
http_header_remove_all(h, "MIME-Version");
/* also remove boundary element -- it was added erroneously */
if (mime_entity_num_parts(m) == 0)
strip_boundary_element(h,NULL);
mime_replace_headers(m, h);
return h;
}
/* get content-ID header, fix: WAP decoder may leave " at beginning */
Octstr *_x_get_content_id(List *headers)
{
Octstr *cid = http_header_value(headers, octstr_imm("Content-ID"));
if (cid)
if (octstr_get_char(cid, 0) == '"' &&
octstr_get_char(cid, octstr_len(cid) - 1) != '"')
octstr_delete(cid, 0,1);
return cid;
}
/* Utility: Take a header list, remove any boundary parameter from the content-type
* element. We don't want this in the WSP packed content.
*/
void strip_boundary_element(List *headers, char *s)
{
Octstr *ctype = NULL, *params = NULL;
Octstr *value;
gw_assert(headers);
get_content_type(headers, &ctype, &params);
if (s) {/* we are replacing the content type as well as stripping */
if (ctype)
octstr_destroy(ctype);
ctype = octstr_create(s);
}
if (params) {
List *h = get_value_parameters(params);
Octstr *ps;
http_header_remove_all(h,"boundary"); /* We don't need the boundary param if it is there. */
ps = make_value_parameters(h);
value = octstr_format("%S%s%S", ctype,
(ps && octstr_len(ps) > 0) ? "; " : "",
ps);
octstr_destroy(ps);
http_destroy_headers(h);
} else
value = ctype;
http_header_remove_all(headers, "Content-Type");
http_header_add(headers, "Content-Type", octstr_get_cstr(value));
if (ctype != value)
octstr_destroy(ctype);
octstr_destroy(value);
}
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