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Work on copy of firmware so that it doesn't get corrupted on a "make install" (bug #2106)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3500 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-07-24 02:50:11 +00:00
parent 4dba976a7f
commit 35ffb12ae8
1 changed files with 53 additions and 2 deletions
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55
channels/chan_iax2.c
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@@ -924,11 +924,28 @@ static int try_firmware(char *s)
{
struct stat stbuf;
struct iax_firmware *cur;
int ifd;
int fd;
int res;
struct ast_iax2_firmware_header *fwh, fwh2;
struct MD5Context md5;
unsigned char sum[16];
unsigned char buf[1024];
int len, chunk;
char *s2;
char *last;
s2 = alloca(strlen(s) + 100);
if (!s2) {
ast_log(LOG_WARNING, "Alloca failed!\n");
return -1;
}
last = strrchr(s, '/');
if (last)
last++;
else
last = s;
snprintf(s2, strlen(s) + 100, "/var/tmp/%s-%ld", last, (unsigned long)rand());
res = stat(s, &stbuf);
if (res < 0) {
ast_log(LOG_WARNING, "Failed to stat '%s': %s\n", s, strerror(errno));
@@ -937,11 +954,45 @@ static int try_firmware(char *s)
/* Make sure it's not a directory */
if (S_ISDIR(stbuf.st_mode))
return -1;
fd = open(s, O_RDONLY);
if (fd < 0) {
ifd = open(s, O_RDONLY);
if (ifd < 0) {
ast_log(LOG_WARNING, "Cannot open '%s': %s\n", s, strerror(errno));
return -1;
}
fd = open(s2, O_RDWR | O_CREAT | O_EXCL);
if (fd < 0) {
ast_log(LOG_WARNING, "Cannot open '%s' for writing: %s\n", s2, strerror(errno));
close(ifd);
return -1;
}
/* Unlink our newly created file */
unlink(s2);
/* Now copy the firmware into it */
len = stbuf.st_size;
while(len) {
chunk = len;
if (chunk > sizeof(buf))
chunk = sizeof(buf);
res = read(ifd, buf, chunk);
if (res != chunk) {
ast_log(LOG_WARNING, "Only read %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
close(ifd);
close(fd);
return -1;
}
res = write(fd, buf, chunk);
if (res != chunk) {
ast_log(LOG_WARNING, "Only write %d of %d bytes of data :(: %s\n", res, chunk, strerror(errno));
close(ifd);
close(fd);
return -1;
}
len -= chunk;
}
close(ifd);
/* Return to the beginning */
lseek(fd, 0, SEEK_SET);
if ((res = read(fd, &fwh2, sizeof(fwh2))) != sizeof(fwh2)) {
ast_log(LOG_WARNING, "Unable to read firmware header in '%s'\n", s);
close(fd);