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Refactor md5sum checking. 

This will allow deltas and packages to share the md5sum checking code.

Signed-off-by: Nathan Jones <nathanj@insightbb.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Nathan Jones 2007-10-19 13:17:52 -04:00 committed by Dan McGee
parent 0c2cc108d3
commit 520db578da
1 changed files with 89 additions and 44 deletions
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133
lib/libalpm/sync.c
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@ -700,6 +700,90 @@ cleanup:
return(ret);
}
/** Compares the md5sum of a file to the expected value.
*
* If the md5sum does not match, the user is asked whether the file
* should be deleted.
*
* @param trans the transaction
* @param filename the filename of the file to test
* @param md5sum the expected md5sum of the file
* @param data data to write the error messages to
*
* @return 0 if the md5sum matched, 1 otherwise
*/
static int test_md5sum(pmtrans_t *trans, const char *filename,
const char *md5sum, alpm_list_t **data)
{
char *filepath;
char *md5sum2;
char *errormsg = NULL;
int ret = 0;
filepath = _alpm_filecache_find(filename);
md5sum2 = alpm_get_md5sum(filepath);
if(md5sum == NULL) {
/* TODO wtf is this? malloc'd strings for error messages? */
if((errormsg = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(errormsg, 512, _("can't get md5 checksum for file %s\n"),
filename);
*data = alpm_list_add(*data, errormsg);
ret = 1;
} else if(md5sum2 == NULL) {
if((errormsg = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(errormsg, 512, _("can't get md5 checksum for file %s\n"),
filename);
*data = alpm_list_add(*data, errormsg);
ret = 1;
} else if(strcmp(md5sum, md5sum2) != 0) {
int doremove = 0;
if((errormsg = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
QUESTION(trans, PM_TRANS_CONV_CORRUPTED_PKG, (char *)filename,
NULL, NULL, &doremove);
if(doremove) {
unlink(filepath);
}
snprintf(errormsg, 512, _("file %s was corrupted (bad MD5 checksum)\n"),
filename);
*data = alpm_list_add(*data, errormsg);
ret = 1;
}
FREE(filepath);
FREE(md5sum2);
return(ret);
}
/** Compares the md5sum of a package to the expected value.
*
* @param trans the transaction
* @param pkg the package to test
* @param data data to write the error messages to
*
* @return 0 if the md5sum matched, 1 otherwise
*/
static int test_pkg_md5sum(pmtrans_t *trans, pmpkg_t *pkg, alpm_list_t **data)
{
const char *filename;
const char *md5sum;
int ret = 0;
filename = alpm_pkg_get_filename(pkg);
md5sum = alpm_pkg_get_md5sum(pkg);
ret = test_md5sum(trans, filename, md5sum, data);
return(ret);
}
int _alpm_sync_commit(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t **data)
{
alpm_list_t *i, *j, *files = NULL;
@ -761,54 +845,15 @@ int _alpm_sync_commit(pmtrans_t *trans, pmdb_t *db_local, alpm_list_t **data)
for(i = trans->packages; i; i = i->next) {
pmsyncpkg_t *sync = i->data;
pmpkg_t *spkg = sync->pkg;
const char *filename;
char *filepath;
char *md5sum1, *md5sum2;
char *ptr=NULL;
int ret = 0;
filename = alpm_pkg_get_filename(spkg);
md5sum1 = spkg->md5sum;
ret = test_pkg_md5sum(trans, spkg, data);
if(md5sum1 == NULL) {
/* TODO wtf is this? malloc'd strings for error messages? */
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(ptr, 512, _("can't get md5 checksum for package %s\n"), filename);
*data = alpm_list_add(*data, ptr);
if(ret == 1) {
retval = 1;
continue;
} else if(ret == -1) { /* -1 is for serious errors */
RET_ERR(pm_errno, -1);
}
filepath = _alpm_filecache_find(filename);
md5sum2 = alpm_get_md5sum(filepath);
if(md5sum2 == NULL) {
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
snprintf(ptr, 512, _("can't get md5 checksum for package %s\n"), filename);
*data = alpm_list_add(*data, ptr);
retval = 1;
continue;
}
if(strcmp(md5sum1, md5sum2) != 0) {
int doremove=0;
if((ptr = calloc(512, sizeof(char))) == NULL) {
RET_ERR(PM_ERR_MEMORY, -1);
}
QUESTION(trans, PM_TRANS_CONV_CORRUPTED_PKG, (char *)filename,
NULL, NULL, &doremove);
if(doremove) {
unlink(filepath);
}
snprintf(ptr, 512, _("archive %s was corrupted (bad MD5 checksum)\n"),
filename);
*data = alpm_list_add(*data, ptr);
retval = 1;
}
FREE(filepath);
FREE(md5sum2);
}
if(retval) {
pm_errno = PM_ERR_PKG_CORRUPTED;