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xpp: clean 'Extrainfo' EEPROM field 

* Extrainfo field contains junk data
* Caused by:
  - The field is initialized to 0xFF values
  - There was no null termination (and no room to add it)
* New code:
  - Ensure that show_extrainfo() have null termination even if EEPROM
    field is full.
  - Replace trailing 0xFF characters with '\0' when reading this field
  - Since our default burned EEPROM contain Extrainfo field full of
    0xFF characters, this would make them look as null filled.

Internal Issue-Id: #1341
Signed-off-by: Oron Peled <oron.peled@xorcom.com>
Acked-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.astersk.org/svn/dahdi/tools/trunk@10491 17933a7a-c749-41c5-a318-cba88f637d49
This commit is contained in:
Oron Peled 2012-03-15 20:29:09 +00:00 committed by Tzafrir Cohen
parent 949ea4ca9f
commit 971a45a807
3 changed files with 18 additions and 2 deletions
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2
xpp/mpp.h
View File

@ -83,7 +83,7 @@ struct capkey {
} PACKED;
struct extrainfo {
char text[24];
char text[EXTRAINFO_SIZE];
} PACKED;
struct mpp_header {

16
xpp/mpptalk.c
View File

@ -366,7 +366,17 @@ int mpp_extrainfo_get(struct astribank_device *astribank, struct extrainfo *info
}
assert(reply->header.op == MPP_EXTRAINFO_GET_REPLY);
if(info) {
int i;
memcpy(info, (void *)&CMD_FIELD(reply, MPP, EXTRAINFO_GET_REPLY, info), sizeof(*info));
/*
* clean non-printing characters
*/
for (i = sizeof(*info) - 1; i >= 0; i--) {
if (info->text[i] != (char)0xFF)
break;
info->text[i] = '\0';
}
}
free_command(reply);
return 0;
@ -876,7 +886,11 @@ void show_astribank_status(struct astribank_device *astribank, FILE *fp)
void show_extrainfo(const struct extrainfo *extrainfo, FILE *fp)
{
fprintf(fp, "Extrainfo: : %s\n", (const char *)(extrainfo->text));
char buf[EXTRAINFO_SIZE + 1];
memcpy(buf, extrainfo->text, EXTRAINFO_SIZE);
buf[EXTRAINFO_SIZE] = '\0'; /* assure null termination */
fprintf(fp, "Extrainfo: : '%s'\n", buf);
}
int twinstar_show(struct astribank_device *astribank, FILE *fp)

2
xpp/mpptalk_defs.h
View File

@ -108,4 +108,6 @@ enum dev_dest {
DEST_EEPROM = 0x02,
};
#define EXTRAINFO_SIZE 24
#endif /* MPPTALK_DEFS_H */