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dload : fix infinite download (big type mistake)

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fetchIO_read returns -1 in case of error, and the return type is
ssize_t, not size_t ! So we converted -1 to an unsigned, which led to
huge file write.

The rest is just changing the error return a bit.

Signed-off-by: Xavier Chantry <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Xavier Chantry 2009-09-29 19:19:54 +02:00 committed by Dan McGee
parent 7f14f185a2
commit 20392c0a02
1 changed files with 22 additions and 7 deletions
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29
lib/libalpm/dload.c
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@ -100,6 +100,15 @@ static struct url *url_for_string(const char *url)
return(ret);
}
static const char *gethost(struct url *fileurl)
{
const char *host = _("disk");
if(strcmp(SCHEME_FILE, fileurl->scheme) != 0) {
host = fileurl->host;
}
return(host);
}
static int download_internal(const char *url, const char *localpath,
time_t mtimeold, time_t *mtimenew) {
fetchIO *dlf = NULL;
@ -107,7 +116,8 @@ static int download_internal(const char *url, const char *localpath,
struct url_stat ust;
struct stat st;
int chk_resume = 0, ret = 0;
size_t dl_thisfile = 0, nread = 0;
size_t dl_thisfile = 0;
ssize_t nread = 0;
char *tempfile, *destfile, *filename;
struct sigaction new_action, old_action;
struct url *fileurl = url_for_string(url);
@ -170,13 +180,9 @@ static int download_internal(const char *url, const char *localpath,
}
if(fetchLastErrCode != 0 || dlf == NULL) {
const char *host = _("disk");
if(strcmp(SCHEME_FILE, fileurl->scheme) != 0) {
host = fileurl->host;
}
pm_errno = PM_ERR_LIBFETCH;
_alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s\n"),
filename, host, fetchLastErrString);
filename, gethost(fileurl), fetchLastErrString);
ret = -1;
goto cleanup;
} else {
@ -231,8 +237,17 @@ static int download_internal(const char *url, const char *localpath,
}
/* did the transfer complete normally? */
if (nread == -1) {
/* not PM_ERR_LIBFETCH here because libfetch error string might be empty */
pm_errno = PM_ERR_RETRIEVE;
_alpm_log(PM_LOG_ERROR, _("failed retrieving file '%s' from %s\n"),
filename, gethost(fileurl));
ret = -1;
goto cleanup;
}
if (ust.size != -1 && dl_thisfile < ust.size) {
pm_errno = PM_ERR_LIBFETCH;
pm_errno = PM_ERR_RETRIEVE;
_alpm_log(PM_LOG_ERROR, _("%s appears to be truncated: %jd/%jd bytes\n"),
filename, (intmax_t)dl_thisfile, (intmax_t)ust.size);
ret = -1;