When installing a package with "pacman -U" that has a detached
signature, check if the needed key is in the keyring and download
if necessary.
Signed-off-by: Allan McRae
---
lib/libalpm/be_package.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++
lib/libalpm/signing.c | 5 ++++
2 files changed, 71 insertions(+)
diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index 8c5b2d1..d088820 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -511,6 +511,34 @@ error:
return NULL;
}
+static int read_sigfile(const char *sigpath, unsigned char **sig)
+{
+ struct stat st;
+ FILE *fp;
+
+ if(stat(sigpath, &st) != 0) {
+ return -1;
+ }
+
+ *sig = malloc(st.st_size);
+ if(!(*sig)) {
+ return -1;
+ }
+
+ if((fp = fopen(sigpath, "rb")) == NULL) {
+ free(*sig);
+ return -1;
+ }
+
+ if(fread(*sig, st.st_size, 1, fp) != 1) {
+ free(*sig);
+ fclose(fp);
+ return -1;
+ }
+
+ return st.st_size;
+}
+
int SYMEXPORT alpm_pkg_load(alpm_handle_t *handle, const char *filename, int full,
alpm_siglevel_t level, alpm_pkg_t **pkg)
{
@@ -519,6 +547,44 @@ int SYMEXPORT alpm_pkg_load(alpm_handle_t *handle, const char *filename, int ful
CHECK_HANDLE(handle, return -1);
ASSERT(pkg != NULL, RET_ERR(handle, ALPM_ERR_WRONG_ARGS, -1));
+ char *sigpath = _alpm_sigpath(handle, filename);
+ if(sigpath && !_alpm_access(handle, NULL, sigpath, R_OK)) {
+ if(level & ALPM_SIG_PACKAGE) {
+ alpm_list_t *keys = NULL;
+ int fail = 0;
+ unsigned char *sig = NULL;
+
+ int len = read_sigfile(sigpath, &sig);
+ if(len == -1) {
+ _alpm_log(handle, ALPM_LOG_ERROR,
+ _("failed to read signature file: %s\n"), sigpath);
+ free(sigpath);
+ return -1;
+ }
+
+ if(_alpm_extract_keyid(handle, filename, sig, len, &keys) == 0) {
+ alpm_list_t *k;
+ for(k = keys; k; k = k->next) {
+ char *key = k->data;
+ if(_alpm_key_in_keychain(handle, key) == 0) {
+ if(_alpm_key_import(handle, key) == -1) {
+ fail = 1;
+ }
+ }
+ }
+ FREELIST(keys);
+ }
+
+ free(sig);
+
+ if(fail) {
+ _alpm_log(handle, ALPM_LOG_ERROR, _("required key missing from keyring\n"));
+ return -1;
+ }
+ }
+ }
+ free(sigpath);
+
if(_alpm_pkg_validate_internal(handle, filename, NULL, level, NULL,
&validation) == -1) {
/* pm_errno is set by pkg_validate */
diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c
index 4e59e0a..8d70b61 100644
--- a/lib/libalpm/signing.c
+++ b/lib/libalpm/signing.c
@@ -192,6 +192,11 @@ int _alpm_key_in_keychain(alpm_handle_t *handle, const char *fpr)
gpgme_key_t key;
int ret = -1;
+ if(init_gpgme(handle)) {
+ /* pm_errno was set in gpgme_init() */
+ goto error;
+ }
+
memset(&ctx, 0, sizeof(ctx));
err = gpgme_new(&ctx);
CHECK_ERR();
--
1.8.0