Add support for repo.commit-filter and repo.source-filter

[cgit.git] / shared.c

diff --git a/shared.c b/shared.c
index cce0af40db29b77527fe1f6a7a897b4076c9621b..783604beba81510f4e155c6de8edced39c8ac3df 100644 (file)
--- a/shared.c
+++ b/shared.c
@@ -62,6 +62,8 @@ struct cgit_repo *cgit_add_repo(const char *url)
        ret->module_link = ctx.cfg.module_link;
        ret->readme = NULL;
        ret->mtime = -1;
+       ret->commit_filter = ctx.cfg.commit_filter;
+       ret->source_filter = ctx.cfg.source_filter;
        return ret;
 }
 
@@ -355,3 +357,38 @@ int cgit_parse_snapshots_mask(const char *str)
        }
        return rv;
 }
+
+int cgit_open_filter(struct cgit_filter *filter)
+{
+
+       filter->old_stdout = chk_positive(dup(STDOUT_FILENO),
+               "Unable to duplicate STDOUT");
+       chk_zero(pipe(filter->pipe_fh), "Unable to create pipe to subprocess");
+       filter->pid = chk_non_negative(fork(), "Unable to create subprocess");
+       if (filter->pid == 0) {
+               close(filter->pipe_fh[1]);
+               chk_non_negative(dup2(filter->pipe_fh[0], STDIN_FILENO),
+                       "Unable to use pipe as STDIN");
+               execvp(filter->cmd, filter->argv);
+               die("Unable to exec subprocess %s: %s (%d)", filter->cmd,
+                       strerror(errno), errno);
+       }
+       close(filter->pipe_fh[0]);
+       chk_non_negative(dup2(filter->pipe_fh[1], STDOUT_FILENO),
+               "Unable to use pipe as STDOUT");
+       close(filter->pipe_fh[1]);
+       return 0;
+}
+
+int cgit_close_filter(struct cgit_filter *filter)
+{
+       chk_non_negative(dup2(filter->old_stdout, STDOUT_FILENO),
+               "Unable to restore STDOUT");
+       close(filter->old_stdout);
+       if (filter->pid < 0)
+               return 0;
+       waitpid(filter->pid, &filter->exitstatus, 0);
+       if (WIFEXITED(filter->exitstatus) && !WEXITSTATUS(filter->exitstatus))
+               return 0;
+       die("Subprocess %s exited abnormally", filter->cmd);
+}