git/list[1] front-page[2] threads[3] people[4] search[5] about
 

[PATCH 4] gitweb: More explicit error messages for open "-|"

From
Jakub Narebski <jnareb@gmail.com>
Date
Jul 29, 2006, 21:01 UTC
Message-ID
<200607292301.01236.jnareb@gmail.com>
In-Reply-To
<200607292239.11034.jnareb@gmail.com>

Use more explicit error messages when failing magical "-|" open, stating at least the name of the git command that failed.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
Should not affect web security.
 gitweb/gitweb.cgi |   29 +++++++++++++++++------------
 1 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/gitweb/gitweb.cgi b/gitweb/gitweb.cgi
index e1a817b..2c67df0 100755
--- a/gitweb/gitweb.cgi
+++ b/gitweb/gitweb.cgi
@@ -1063,7 +1063,7 @@ sub git_summary {
 	      "<tr><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n" .
 	      "</table>\n";
 	open my $fd, "-|", $GIT, "rev-list", "--max-count=17", git_read_head($project) 
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-rev-list failed.");
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd;
 	print "<div>\n" .
@@ -1271,7 +1271,7 @@ sub git_blame2 {
 		die_error("400 Bad Request", "object is not a blob");
 	}
 	open ($fd, "-|", $GIT, "blame", '-l', $file_name, $hash_base)
-		or die_error(undef, "Open failed");
+		or die_error(undef, "Open git-blame failed.");
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
 		$cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
@@ -1333,7 +1333,7 @@ sub git_blame {
 			or die_error(undef, "Error lookup file.");
 	}
 	open ($fd, "-|", $GIT, "annotate", '-l', '-t', '-r', $file_name, $hash_base)
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-annotate failed.");
 	git_header_html();
 	print "<div class=\"page_nav\">\n" .
 		$cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=summary")}, "summary") .
@@ -1609,7 +1609,8 @@ sub git_blob_plain {
 		}
 	}
 	my $type = shift;
-	open my $fd, "-|", $GIT, "cat-file", "blob", $hash or die_error("Couldn't cat $file_name, $hash");
+	open my $fd, "-|", $GIT, "cat-file", "blob", $hash 
+		or die_error("Couldn't cat $file_name, $hash");
 
 	$type ||= git_blob_plain_mimetype($fd, $file_name);
 
@@ -1641,7 +1642,8 @@ sub git_blob {
 		}
 	}
 	my $have_blame = git_get_project_config_bool ('blame');
-	open my $fd, "-|", $GIT, "cat-file", "blob", $hash or die_error(undef, "Open failed.");
+	open my $fd, "-|", $GIT, "cat-file", "blob", $hash 
+		or die_error(undef, "Couldn't cat $file_name, $hash.");
 	my $mimetype = git_blob_plain_mimetype($fd, $file_name);
 	if ($mimetype !~ m/^text\//) {
 		close $fd;
@@ -1705,7 +1707,8 @@ sub git_tree {
 		}
 	}
 	$/ = "\0";
-	open my $fd, "-|", $GIT, "ls-tree", '-z', $hash or die_error(undef, "Open git-ls-tree failed.");
+	open my $fd, "-|", $GIT, "ls-tree", '-z', $hash 
+		or die_error(undef, "Open git-ls-tree failed.");
 	chomp (my (@entries) = <$fd>);
 	close $fd or die_error(undef, "Reading tree failed.");
 	$/ = "\n";
@@ -1787,7 +1790,7 @@ #			      " | " . $cgi->a({-href => "$my
 sub git_rss {
 	# http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
 	open my $fd, "-|", $GIT, "rev-list", "--max-count=150", git_read_head($project) 
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-rev-list failed.");
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading rev-list failed.");
 	print $cgi->header(-type => 'text/xml', -charset => 'utf-8');
@@ -1895,7 +1898,8 @@ sub git_log {
 	      " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
 	my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
-	open my $fd, "-|", $GIT, "rev-list", $limit, $hash or die_error(undef, "Open failed.");
+	open my $fd, "-|", $GIT, "rev-list", $limit, $hash 
+		or die_error(undef, "Open git-rev-list failed.");
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd;
 
@@ -1987,7 +1991,7 @@ sub git_commit {
 		$parent = "";
 	}
 	open my $fd, "-|", $GIT, "diff-tree", '-r', '-M', $root, $parent, $hash 
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-diff-tree failed.");
 	@difftree = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading diff-tree failed.");
 
@@ -2234,7 +2238,7 @@ sub git_commitdiff {
 		$hash_parent = $co{'parent'};
 	}
 	open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-diff-tree failed.");
 	my (@difftree) = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading diff-tree failed.");
 
@@ -2325,7 +2329,7 @@ sub git_commitdiff {
 sub git_commitdiff_plain {
 	mkdir($git_temp, 0700);
 	open my $fd, "-|", $GIT, "diff-tree", '-r', $hash_parent, $hash 
-		or die_error(undef, "Open failed.");
+		or die_error(undef, "Open git-diff-tree failed.");
 	my (@difftree) = map { chomp; $_ } <$fd>;
 	close $fd or die_error(undef, "Reading diff-tree failed.");
 
@@ -2618,7 +2622,8 @@ sub git_shortlog {
 	      " | " . $cgi->a({-href => "$my_uri?" . esc_param("p=$project;a=tree;h=$hash;hb=$hash")}, "tree") . "<br/>\n";
 
 	my $limit = sprintf("--max-count=%i", (100 * ($page+1)));
-	open my $fd, "-|", $GIT, "rev-list", $limit, $hash or die_error(undef, "Open failed.");
+	open my $fd, "-|", $GIT, "rev-list", $limit, $hash 
+		or die_error(undef, "Open git-rev-list failed.");
 	my (@revlist) = map { chomp; $_ } <$fd>;
 	close $fd;
 

-- 
1.4.0
Previous: Jakub NarebskiNext: Jakub Narebski
Message 11 of 54 in “Some gitweb patches”
  1. Some gitweb patchesJakub Narebski, Jul 29, 2006
  2. gitweb: whitespace cleanupJakub Narebski, Jul 29, 2006
  3. gitweb: Use list for of open for running git commands, thorougly.Jakub Narebski, Jul 29, 2006
  4. Jakub NarebskiJul 30, 2006
  5. Junio C HamanoJul 31, 2006
  6. Jakub NarebskiJul 31, 2006
  7. Jakub NarebskiJul 31, 2006
  8. Jakub NarebskiJul 31, 2006
  9. Jakub NarebskiJul 31, 2006
  10. gitweb: simplify git_get_hash_by_pathJakub Narebski, Jul 29, 2006
  11. gitweb: More explicit error messages for open "-|"Jakub Narebski, Jul 29, 2006
  12. gitweb: Cleanup - chomp $line in consistent styleJakub Narebski, Jul 30, 2006
  13. gitweb: Correct error from changing "-|" open to list form in git_commitJakub Narebski, Jul 30, 2006
  14. gitweb: Cleanup - chomp @lines in consistent styleJakub Narebski, Jul 30, 2006
  15. gitweb: Add git_page_nav for later useJakub Narebski, Jul 30, 2006
  16. gitweb: Navbar refactoring - use git_page_nav to generate navigation barJakub Narebski, Jul 30, 2006
  17. gitweb: Replace form-feed character by ^LJakub Narebski, Jul 30, 2006
  18. gitweb: Read project description using utf-8 encodingJakub Narebski, Jul 30, 2006
  19. Jakub NarebskiJul 30, 2006
  20. gitweb: Show project descriptions with utf-8 characters in project list correctlyJakub Narebski, Jul 30, 2006
  21. gitweb: Add "\n" after <br/> in git_page_navJakub Narebski, Jul 30, 2006
  22. gitweb: Pager refactoring - use git_get_paging_nav for paginationJakub Narebski, Jul 30, 2006
  23. gitweb: Remove $project from git_get_paging_nav argumentsJakub Narebski, Jul 30, 2006
  24. gitweb: Headers refactoring - use git_header_div for header divsJakub Narebski, Jul 30, 2006
  25. gitweb: Remove characters entities entirely when shortening stringJakub Narebski, Jul 30, 2006
  26. Jakub NarebskiJul 31, 2006
  27. Jakub NarebskiJul 31, 2006
  28. gitweb: Ref refactoring - use git_get_referencing for marking tagged/head commitsJakub Narebski, Jul 31, 2006
  29. gitweb: Refactor generation of shortlog, tags and heads bodyJakub Narebski, Jul 31, 2006
  30. gitweb: No need to quote path for list version of open "-|"Jakub Narebski, Jul 31, 2006
  31. Junio C HamanoJul 31, 2006
  32. Jakub NarebskiJul 31, 2006
  33. Junio C HamanoAug 1, 2006
  34. There can be more than two levels of subdirectoriesJunio C Hamano, Aug 1, 2006
  35. gitweb: Reordering code and dividing it into categoriesJakub Narebski, Jul 31, 2006
  36. gitweb: Reordering code and dividing it into categoriesJakub Narebski, Jul 31, 2006
  37. gitweb: use a hash to lookup the sub for an actionMatthias Lederhofer, Jul 31, 2006
  38. Junio C HamanoJul 31, 2006
  39. Jakub NarebskiJul 31, 2006
  40. Luben TuikovAug 1, 2006
  41. Jakub Narebski, Aug 1, 2006
  42. Perhaps an obvious cut and paste error.Junio C Hamano, Aug 1, 2006
  43. Jakub NarebskiAug 1, 2006
  44. A few more fixups to gitwebJunio C Hamano, Aug 1, 2006
  45. Jakub NarebskiAug 1, 2006
  46. Junio C HamanoAug 1, 2006
  47. 1/2 Use tabs for indent in shell scriptsJakub Narebski, Aug 1, 2006
  48. 2/2 Set User-Agent string in shell scripts used for fetchingJakub Narebski, Aug 1, 2006
  49. Junio C HamanoAug 1, 2006
  50. Junio C HamanoAug 1, 2006
  51. Jakub NarebskiAug 1, 2006
  52. Luben TuikovAug 1, 2006
  53. gitweb: clean up user configuration partMatthias Lederhofer, Aug 1, 2006
  54. gitweb: include perl files for configurationMatthias Lederhofer, Aug 1, 2006

Read the whole thread, see it on lore, or plain text.

$ cat FOOTERMessages come from the public archive at lore.kernel.org/git, fetched every hour. The front page is chosen and written each morning by an AI editor and can be wrong; the threads themselves are the record. About and API. For agents: an MCP server at https://gitlist.dev/mcp, and any thread, story or person page as Markdown by adding .md to its URL (or sending Accept: text/markdown). Details in /llms.txt.