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188 lines
6.5 KiB
188 lines
6.5 KiB
git-http-backend(1) |
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=================== |
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NAME |
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---- |
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git-http-backend - Server side implementation of Git over HTTP |
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SYNOPSIS |
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-------- |
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[verse] |
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'git http-backend' |
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DESCRIPTION |
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----------- |
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A simple CGI program to serve the contents of a Git repository to Git |
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clients accessing the repository over http:// and https:// protocols. |
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The program supports clients fetching using both the smart HTTP protcol |
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and the backwards-compatible dumb HTTP protocol, as well as clients |
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pushing using the smart HTTP protocol. |
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It verifies that the directory has the magic file |
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"git-daemon-export-ok", and it will refuse to export any git directory |
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that hasn't explicitly been marked for export this way (unless the |
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GIT_HTTP_EXPORT_ALL environmental variable is set). |
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By default, only the `upload-pack` service is enabled, which serves |
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'git fetch-pack' and 'git ls-remote' clients, which are invoked from |
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'git fetch', 'git pull', and 'git clone'. If the client is authenticated, |
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the `receive-pack` service is enabled, which serves 'git send-pack' |
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clients, which is invoked from 'git push'. |
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SERVICES |
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-------- |
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These services can be enabled/disabled using the per-repository |
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configuration file: |
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http.getanyfile:: |
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This serves older Git clients which are unable to use the |
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upload pack service. When enabled, clients are able to read |
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any file within the repository, including objects that are |
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no longer reachable from a branch but are still present. |
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It is enabled by default, but a repository can disable it |
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by setting this configuration item to `false`. |
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http.uploadpack:: |
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This serves 'git fetch-pack' and 'git ls-remote' clients. |
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It is enabled by default, but a repository can disable it |
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by setting this configuration item to `false`. |
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http.receivepack:: |
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This serves 'git send-pack' clients, allowing push. It is |
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disabled by default for anonymous users, and enabled by |
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default for users authenticated by the web server. It can be |
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disabled by setting this item to `false`, or enabled for all |
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users, including anonymous users, by setting it to `true`. |
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URL TRANSLATION |
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--------------- |
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To determine the location of the repository on disk, 'git http-backend' |
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concatenates the environment variables PATH_INFO, which is set |
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automatically by the web server, and GIT_PROJECT_ROOT, which must be set |
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manually in the web server configuration. If GIT_PROJECT_ROOT is not |
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set, 'git http-backend' reads PATH_TRANSLATED, which is also set |
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automatically by the web server. |
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EXAMPLES |
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-------- |
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All of the following examples map 'http://$hostname/git/foo/bar.git' |
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to '/var/www/git/foo/bar.git'. |
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Apache 2.x:: |
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Ensure mod_cgi, mod_alias, and mod_env are enabled, set |
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GIT_PROJECT_ROOT (or DocumentRoot) appropriately, and |
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create a ScriptAlias to the CGI: |
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+ |
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---------------------------------------------------------------- |
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SetEnv GIT_PROJECT_ROOT /var/www/git |
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SetEnv GIT_HTTP_EXPORT_ALL |
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ScriptAlias /git/ /usr/libexec/git-core/git-http-backend/ |
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---------------------------------------------------------------- |
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+ |
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To enable anonymous read access but authenticated write access, |
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require authorization with a LocationMatch directive: |
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+ |
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---------------------------------------------------------------- |
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<LocationMatch "^/git/.*/git-receive-pack$"> |
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AuthType Basic |
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AuthName "Git Access" |
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Require group committers |
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... |
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</LocationMatch> |
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---------------------------------------------------------------- |
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+ |
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To require authentication for both reads and writes, use a Location |
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directive around the repository, or one of its parent directories: |
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+ |
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---------------------------------------------------------------- |
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<Location /git/private> |
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AuthType Basic |
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AuthName "Private Git Access" |
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Require group committers |
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... |
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</Location> |
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---------------------------------------------------------------- |
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+ |
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To serve gitweb at the same url, use a ScriptAliasMatch to only |
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those URLs that 'git http-backend' can handle, and forward the |
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rest to gitweb: |
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+ |
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---------------------------------------------------------------- |
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ScriptAliasMatch \ |
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"(?x)^/git/(.*/(HEAD | \ |
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info/refs | \ |
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objects/(info/[^/]+ | \ |
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[0-9a-f]{2}/[0-9a-f]{38} | \ |
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pack/pack-[0-9a-f]{40}\.(pack|idx)) | \ |
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git-(upload|receive)-pack))$" \ |
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/usr/libexec/git-core/git-http-backend/$1 |
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ScriptAlias /git/ /var/www/cgi-bin/gitweb.cgi/ |
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---------------------------------------------------------------- |
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Accelerated static Apache 2.x:: |
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Similar to the above, but Apache can be used to return static |
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files that are stored on disk. On many systems this may |
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be more efficient as Apache can ask the kernel to copy the |
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file contents from the file system directly to the network: |
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+ |
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---------------------------------------------------------------- |
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SetEnv GIT_PROJECT_ROOT /var/www/git |
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AliasMatch ^/git/(.*/objects/[0-9a-f]{2}/[0-9a-f]{38})$ /var/www/git/$1 |
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AliasMatch ^/git/(.*/objects/pack/pack-[0-9a-f]{40}.(pack|idx))$ /var/www/git/$1 |
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ScriptAlias /git/ /usr/libexec/git-core/git-http-backend/ |
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---------------------------------------------------------------- |
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+ |
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This can be combined with the gitweb configuration: |
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+ |
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---------------------------------------------------------------- |
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SetEnv GIT_PROJECT_ROOT /var/www/git |
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AliasMatch ^/git/(.*/objects/[0-9a-f]{2}/[0-9a-f]{38})$ /var/www/git/$1 |
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AliasMatch ^/git/(.*/objects/pack/pack-[0-9a-f]{40}.(pack|idx))$ /var/www/git/$1 |
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ScriptAliasMatch \ |
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"(?x)^/git/(.*/(HEAD | \ |
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info/refs | \ |
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objects/info/[^/]+ | \ |
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git-(upload|receive)-pack))$" \ |
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/usr/libexec/git-core/git-http-backend/$1 |
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ScriptAlias /git/ /var/www/cgi-bin/gitweb.cgi/ |
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---------------------------------------------------------------- |
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ENVIRONMENT |
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----------- |
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'git http-backend' relies upon the CGI environment variables set |
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by the invoking web server, including: |
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* PATH_INFO (if GIT_PROJECT_ROOT is set, otherwise PATH_TRANSLATED) |
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* REMOTE_USER |
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* REMOTE_ADDR |
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* CONTENT_TYPE |
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* QUERY_STRING |
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* REQUEST_METHOD |
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The GIT_HTTP_EXPORT_ALL environmental variable may be passed to |
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'git-http-backend' to bypass the check for the "git-daemon-export-ok" |
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file in each repository before allowing export of that repository. |
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The backend process sets GIT_COMMITTER_NAME to '$REMOTE_USER' and |
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GIT_COMMITTER_EMAIL to '$\{REMOTE_USER}@http.$\{REMOTE_ADDR\}', |
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ensuring that any reflogs created by 'git-receive-pack' contain some |
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identifying information of the remote user who performed the push. |
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All CGI environment variables are available to each of the hooks |
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invoked by the 'git-receive-pack'. |
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Author |
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------ |
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Written by Shawn O. Pearce <spearce@spearce.org>. |
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Documentation |
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-------------- |
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Documentation by Shawn O. Pearce <spearce@spearce.org>. |
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GIT |
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--- |
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Part of the linkgit:git[1] suite
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