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-rw-r--r--lib/libalpm/alpm.h22
-rw-r--r--lib/libalpm/signing.c122
2 files changed, 96 insertions, 48 deletions
diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h
index d9f3504c..a91b00f0 100644
--- a/lib/libalpm/alpm.h
+++ b/lib/libalpm/alpm.h
@@ -104,15 +104,26 @@ typedef enum _alpm_siglevel_t {
} alpm_siglevel_t;
/**
- * PGP signature verification return codes
+ * PGP signature verification status return codes
*/
typedef enum _alpm_sigstatus_t {
- ALPM_SIGSTATUS_VALID = 0,
- ALPM_SIGSTATUS_MARGINAL,
- ALPM_SIGSTATUS_UNKNOWN,
- ALPM_SIGSTATUS_BAD
+ ALPM_SIGSTATUS_VALID,
+ ALPM_SIGSTATUS_KEY_EXPIRED,
+ ALPM_SIGSTATUS_SIG_EXPIRED,
+ ALPM_SIGSTATUS_KEY_UNKNOWN,
+ ALPM_SIGSTATUS_INVALID
} alpm_sigstatus_t;
+/**
+ * PGP signature verification status return codes
+ */
+typedef enum _alpm_sigvalidity_t {
+ ALPM_SIGVALIDITY_FULL,
+ ALPM_SIGVALIDITY_MARGINAL,
+ ALPM_SIGVALIDITY_NEVER,
+ ALPM_SIGVALIDITY_UNKNOWN
+} alpm_sigvalidity_t;
+
/*
* Structures
*/
@@ -202,6 +213,7 @@ typedef struct _alpm_backup_t {
typedef struct _alpm_sigresult_t {
int count;
alpm_sigstatus_t *status;
+ alpm_sigvalidity_t *validity;
char **uid;
} alpm_sigresult_t;
diff --git a/lib/libalpm/signing.c b/lib/libalpm/signing.c
index 275851c2..78e6264b 100644
--- a/lib/libalpm/signing.c
+++ b/lib/libalpm/signing.c
@@ -305,8 +305,9 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
_alpm_log(handle, ALPM_LOG_DEBUG, "%d signatures returned\n", sigcount);
result->status = calloc(sigcount, sizeof(alpm_sigstatus_t));
+ result->validity = calloc(sigcount, sizeof(alpm_sigvalidity_t));
result->uid = calloc(sigcount, sizeof(char*));
- if(!result->status || !result->uid) {
+ if(!result->status || !result->validity || !result->uid) {
handle->pm_errno = ALPM_ERR_MEMORY;
goto error;
}
@@ -316,6 +317,7 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
gpgsig = gpgsig->next, sigcount++) {
alpm_list_t *summary_list, *summary;
alpm_sigstatus_t status;
+ alpm_sigvalidity_t validity;
gpgme_key_t key;
_alpm_log(handle, ALPM_LOG_DEBUG, "fingerprint: %s\n", gpgsig->fpr);
@@ -335,6 +337,8 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
if(gpg_err_code(err) == GPG_ERR_EOF) {
_alpm_log(handle, ALPM_LOG_DEBUG, "key lookup failed, unknown key\n");
err = GPG_ERR_NO_ERROR;
+ STRDUP(result->uid[sigcount], gpgsig->fpr,
+ handle->pm_errno = ALPM_ERR_MEMORY; goto error);
} else {
CHECK_ERR();
if(key->uids) {
@@ -346,34 +350,52 @@ int _alpm_gpgme_checksig(alpm_handle_t *handle, const char *path,
gpgme_key_unref(key);
}
- if(gpgsig->summary & GPGME_SIGSUM_VALID) {
- /* definite good signature */
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: valid signature\n");
- status = ALPM_SIGSTATUS_VALID;
- } else if(gpgsig->summary & GPGME_SIGSUM_GREEN) {
- /* good signature */
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: green signature\n");
- status = ALPM_SIGSTATUS_VALID;
- } else if(gpgsig->summary & GPGME_SIGSUM_RED) {
- /* definite bad signature, error */
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: red signature\n");
- status = ALPM_SIGSTATUS_BAD;
- } else if(gpgsig->summary & GPGME_SIGSUM_KEY_MISSING) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: signature from unknown key\n");
- status = ALPM_SIGSTATUS_UNKNOWN;
- } else if(gpgsig->summary & GPGME_SIGSUM_KEY_EXPIRED) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: key expired\n");
- status = ALPM_SIGSTATUS_BAD;
- } else if(gpgsig->summary & GPGME_SIGSUM_SIG_EXPIRED) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: signature expired\n");
- status = ALPM_SIGSTATUS_BAD;
+ switch(gpg_err_code(gpgsig->status)) {
+ /* good cases */
+ case GPG_ERR_NO_ERROR:
+ status = ALPM_SIGSTATUS_VALID;
+ break;
+ case GPG_ERR_KEY_EXPIRED:
+ status = ALPM_SIGSTATUS_KEY_EXPIRED;
+ break;
+ /* bad cases */
+ case GPG_ERR_SIG_EXPIRED:
+ status = ALPM_SIGSTATUS_SIG_EXPIRED;
+ break;
+ case GPG_ERR_NO_PUBKEY:
+ status = ALPM_SIGSTATUS_KEY_UNKNOWN;
+ break;
+ case GPG_ERR_BAD_SIGNATURE:
+ default:
+ status = ALPM_SIGSTATUS_INVALID;
+ break;
+ }
+
+ if(status == ALPM_SIGSTATUS_VALID
+ || status == ALPM_SIGSTATUS_KEY_EXPIRED) {
+ switch(gpgsig->validity) {
+ case GPGME_VALIDITY_ULTIMATE:
+ case GPGME_VALIDITY_FULL:
+ validity = ALPM_SIGVALIDITY_FULL;
+ break;
+ case GPGME_VALIDITY_MARGINAL:
+ validity = ALPM_SIGVALIDITY_MARGINAL;
+ break;
+ case GPGME_VALIDITY_NEVER:
+ validity = ALPM_SIGVALIDITY_NEVER;
+ break;
+ case GPGME_VALIDITY_UNKNOWN:
+ case GPGME_VALIDITY_UNDEFINED:
+ default:
+ validity = ALPM_SIGVALIDITY_UNKNOWN;
+ break;
+ }
} else {
- /* we'll capture everything else here */
- _alpm_log(handle, ALPM_LOG_DEBUG, "result: invalid signature\n");
- status = ALPM_SIGSTATUS_BAD;
+ validity = ALPM_SIGVALIDITY_NEVER;
}
result->status[sigcount] = status;
+ result->validity[sigcount] = validity;
}
ret = 0;
@@ -429,31 +451,45 @@ int _alpm_check_pgp_helper(alpm_handle_t *handle, const char *path,
/* ret will already be -1 */
} else {
int num;
- for(num = 0; num < result.count; num++) {
- /* fallthrough in this case block is on purpose. if one allows unknown
- * signatures, then a marginal signature should be allowed as well, and
- * if neither of these are allowed we fall all the way through to bad. */
+ for(num = 0; !ret && num < result.count; num++) {
switch(result.status[num]) {
case ALPM_SIGSTATUS_VALID:
+ case ALPM_SIGSTATUS_KEY_EXPIRED:
_alpm_log(handle, ALPM_LOG_DEBUG, "signature is valid\n");
- break;
- case ALPM_SIGSTATUS_MARGINAL:
- if(marginal) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "allowing marginal signature\n");
- break;
- }
- case ALPM_SIGSTATUS_UNKNOWN:
- if(unknown) {
- _alpm_log(handle, ALPM_LOG_DEBUG, "allowing unknown signature\n");
- break;
+ switch(result.validity[num]) {
+ case ALPM_SIGVALIDITY_FULL:
+ _alpm_log(handle, ALPM_LOG_DEBUG, "signature is fully trusted\n");
+ break;
+ case ALPM_SIGVALIDITY_MARGINAL:
+ _alpm_log(handle, ALPM_LOG_DEBUG, "signature is marginal trust\n");
+ if(!marginal) {
+ ret = -1;
+ }
+ break;
+ case ALPM_SIGVALIDITY_UNKNOWN:
+ _alpm_log(handle, ALPM_LOG_DEBUG, "signature is unknown trust\n");
+ if(!unknown) {
+ ret = -1;
+ }
+ break;
+ case ALPM_SIGVALIDITY_NEVER:
+ _alpm_log(handle, ALPM_LOG_DEBUG, "signature should never be trusted\n");
+ ret = -1;
+ break;
}
- case ALPM_SIGSTATUS_BAD:
- default:
- _alpm_log(handle, ALPM_LOG_DEBUG, "signature is invalid\n");
- handle->pm_errno = invalid_err;
+ break;
+ case ALPM_SIGSTATUS_SIG_EXPIRED:
+ case ALPM_SIGSTATUS_KEY_UNKNOWN:
+ case ALPM_SIGSTATUS_INVALID:
+ _alpm_log(handle, ALPM_LOG_DEBUG, "signature is not valid\n");
ret = -1;
+ break;
}
}
+
+ if(ret) {
+ handle->pm_errno = invalid_err;
+ }
}
alpm_sigresult_cleanup(&result);
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-01 02:01:34 +0100