Merge branch 'lt/gpg-show-long-key-in-signature-verification-maint' into lt/gpg-show...
[git/git.git] / gpg-interface.c
index f6d9d87..8672eda 100644 (file)
@@ -3,6 +3,7 @@
 #include "strbuf.h"
 #include "gpg-interface.h"
 #include "sigchain.h"
+#include "tempfile.h"
 
 static char *configured_signing_key;
 static const char *gpg_program = "gpg";
@@ -150,42 +151,30 @@ const char *get_signing_key(void)
 int sign_buffer(struct strbuf *buffer, struct strbuf *signature, const char *signing_key)
 {
        struct child_process gpg = CHILD_PROCESS_INIT;
-       const char *args[4];
-       ssize_t len;
+       int ret;
        size_t i, j, bottom;
+       struct strbuf gpg_status = STRBUF_INIT;
 
-       gpg.argv = args;
-       gpg.in = -1;
-       gpg.out = -1;
-       args[0] = gpg_program;
-       args[1] = "-bsau";
-       args[2] = signing_key;
-       args[3] = NULL;
+       argv_array_pushl(&gpg.args,
+                        gpg_program,
+                        "--status-fd=2",
+                        "-bsau", signing_key,
+                        NULL);
 
-       if (start_command(&gpg))
-               return error(_("could not run gpg."));
+       bottom = signature->len;
 
        /*
         * When the username signingkey is bad, program could be terminated
         * because gpg exits without reading and then write gets SIGPIPE.
         */
        sigchain_push(SIGPIPE, SIG_IGN);
-
-       if (write_in_full(gpg.in, buffer->buf, buffer->len) != buffer->len) {
-               close(gpg.in);
-               close(gpg.out);
-               finish_command(&gpg);
-               return error(_("gpg did not accept the data"));
-       }
-       close(gpg.in);
-
-       bottom = signature->len;
-       len = strbuf_read(signature, gpg.out, 1024);
-       close(gpg.out);
-
+       ret = pipe_command(&gpg, buffer->buf, buffer->len,
+                          signature, 1024, &gpg_status, 0);
        sigchain_pop(SIGPIPE);
 
-       if (finish_command(&gpg) || !len || len < 0)
+       ret |= !strstr(gpg_status.buf, "\n[GNUPG:] SIG_CREATED ");
+       strbuf_release(&gpg_status);
+       if (ret)
                return error(_("gpg failed to sign the data"));
 
        /* Strip CR from the line endings, in case we are on Windows. */
@@ -210,50 +199,39 @@ int verify_signed_buffer(const char *payload, size_t payload_size,
                         struct strbuf *gpg_output, struct strbuf *gpg_status)
 {
        struct child_process gpg = CHILD_PROCESS_INIT;
-       const char *args_gpg[] = {NULL, "--status-fd=1", "--keyid-format=long", "--verify", "FILE", "-", NULL};
-       char path[PATH_MAX];
+       static struct tempfile temp;
        int fd, ret;
        struct strbuf buf = STRBUF_INIT;
-       struct strbuf *pbuf = &buf;
 
-       args_gpg[0] = gpg_program;
-       fd = git_mkstemp(path, PATH_MAX, ".git_vtag_tmpXXXXXX");
+       fd = mks_tempfile_t(&temp, ".git_vtag_tmpXXXXXX");
        if (fd < 0)
-               return error(_("could not create temporary file '%s': %s"),
-                            path, strerror(errno));
-       if (write_in_full(fd, signature, signature_size) < 0)
-               return error(_("failed writing detached signature to '%s': %s"),
-                            path, strerror(errno));
+               return error_errno(_("could not create temporary file"));
+       if (write_in_full(fd, signature, signature_size) < 0) {
+               error_errno(_("failed writing detached signature to '%s'"),
+                           temp.filename.buf);
+               delete_tempfile(&temp);
+               return -1;
+       }
        close(fd);
 
-       gpg.argv = args_gpg;
-       gpg.in = -1;
-       gpg.out = -1;
-       if (gpg_output)
-               gpg.err = -1;
-       args_gpg[4] = path;
-       if (start_command(&gpg)) {
-               unlink(path);
-               return error(_("could not run gpg."));
-       }
+       argv_array_pushl(&gpg.args,
+                        gpg_program,
+                        "--status-fd=1",
+                        "--keyid-format=long",
+                        "--verify", temp.filename.buf, "-",
+                        NULL);
 
-       write_in_full(gpg.in, payload, payload_size);
-       close(gpg.in);
+       if (!gpg_status)
+               gpg_status = &buf;
 
-       if (gpg_output) {
-               strbuf_read(gpg_output, gpg.err, 0);
-               close(gpg.err);
-       }
-       if (gpg_status)
-               pbuf = gpg_status;
-       strbuf_read(pbuf, gpg.out, 0);
-       close(gpg.out);
-
-       ret = finish_command(&gpg);
+       sigchain_push(SIGPIPE, SIG_IGN);
+       ret = pipe_command(&gpg, payload, payload_size,
+                          gpg_status, 0, gpg_output, 0);
+       sigchain_pop(SIGPIPE);
 
-       unlink_or_warn(path);
+       delete_tempfile(&temp);
 
-       ret |= !strstr(pbuf->buf, "\n[GNUPG:] GOODSIG ");
+       ret |= !strstr(gpg_status->buf, "\n[GNUPG:] GOODSIG ");
        strbuf_release(&buf); /* no matter it was used or not */
 
        return ret;