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stream_cddb: replace sprintf with snprintf

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Replace sprintf with snprintf.

To my knowledge the only "real" issue this fixes
is that setting certain environment variables to
very long strings might have caused overflows.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@35306 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2012-10-31 18:55:33 +00:00 committed by wm4
parent a169aa6364
commit 7d5a6b9b02
1 changed files with 14 additions and 12 deletions
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26
stream/stream_cddb.c
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@ -106,7 +106,7 @@ static int read_toc(const char *dev)
CDROM_TOC toc;
char device[10];
sprintf(device, "\\\\.\\%s", dev);
snprintf(device, sizeof(device), "\\\\.\\%s", dev);
drive = CreateFile(device, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, 0);
@ -305,7 +305,7 @@ static int cddb_http_request(char *command,
if (reply_parser == NULL || command == NULL || cddb_data == NULL)
return -1;
sprintf(request, "http://%s/~cddb/cddb.cgi?cmd=%s%s&proto=%d",
snprintf(request, sizeof(request), "http://%s/~cddb/cddb.cgi?cmd=%s%s&proto=%d",
cddb_data->freedb_server, command, cddb_data->cddb_hello,
cddb_data->freedb_proto_level);
mp_msg(MSGT_OPEN, MSGL_INFO,"Request[%s]\n", request);
@ -358,7 +358,7 @@ static int cddb_read_cache(cddb_data_t *cddb_data)
if (cddb_data == NULL || cddb_data->cache_dir == NULL)
return -1;
sprintf(file_name, "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id);
snprintf(file_name, sizeof(file_name), "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id);
file_fd = open(file_name, O_RDONLY | O_BINARY);
if (file_fd < 0) {
@ -419,7 +419,7 @@ static int cddb_write_cache(cddb_data_t *cddb_data)
}
}
sprintf(file_name, "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id);
snprintf(file_name, sizeof(file_name), "%s%08lx", cddb_data->cache_dir, cddb_data->disc_id);
file_fd = creat(file_name, S_IRUSR | S_IWUSR);
if (file_fd < 0) {
@ -506,7 +506,7 @@ static int cddb_read_parse(HTTP_header_t *http_hdr, cddb_data_t *cddb_data)
static int cddb_request_titles(cddb_data_t *cddb_data)
{
char command[1024];
sprintf(command, "cddb+read+%s+%08lx",
snprintf(command, sizeof(command), "cddb+read+%s+%08lx",
cddb_data->category, cddb_data->disc_id);
return cddb_http_request(command, cddb_read_parse, cddb_data);
}
@ -671,7 +671,8 @@ static void cddb_create_hello(cddb_data_t *cddb_data)
}
user_name = getenv("LOGNAME");
}
sprintf(cddb_data->cddb_hello, "&hello=%s+%s+%s",
snprintf(cddb_data->cddb_hello, sizeof(cddb_data->cddb_hello),
"&hello=%s+%s+%s",
user_name, host_name, mplayer_version);
}
@ -684,8 +685,9 @@ static int cddb_retrieve(cddb_data_t *cddb_data)
ptr = offsets;
for (i = 0; i < cddb_data->tracks ; i++) {
ptr += sprintf(ptr, "%d+", cdtoc[i].frame);
if (ptr-offsets > sizeof offsets - 40) break;
unsigned space = sizeof(offsets) - (ptr - offsets);
if (space < 40) break;
ptr += snprintf(ptr, space, "%d+", cdtoc[i].frame);
}
ptr[0] = 0;
time_len = (cdtoc[cddb_data->tracks].frame)/75;
@ -700,7 +702,7 @@ static int cddb_retrieve(cddb_data_t *cddb_data)
return -1;
}
sprintf(command, "cddb+query+%08lx+%d+%s%d", cddb_data->disc_id,
snprintf(command, sizeof(command), "cddb+query+%08lx+%d+%s%d", cddb_data->disc_id,
cddb_data->tracks, offsets, time_len);
ret = cddb_http_request(command, cddb_query_parse, cddb_data);
if (ret < 0)
@ -750,13 +752,13 @@ int cddb_resolve(const char *dev, char **xmcd_file)
if (home_dir == NULL) {
cddb_data.cache_dir = NULL;
} else {
cddb_data.cache_dir = malloc(strlen(home_dir)
+ strlen(cddb_cache_dir) + 1);
unsigned len = strlen(home_dir) + strlen(cddb_cache_dir) + 1;
cddb_data.cache_dir = malloc(len);
if (cddb_data.cache_dir == NULL) {
mp_tmsg(MSGT_DEMUX, MSGL_ERR, "Memory allocation failed.\n");
return -1;
}
sprintf(cddb_data.cache_dir, "%s%s", home_dir, cddb_cache_dir);
snprintf(cddb_data.cache_dir, len, "%s%s", home_dir, cddb_cache_dir);
}
// Check for a cached file