From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff King Subject: [PATCHv2 04/13] credential: add function for parsing url components Date: Tue, 6 Dec 2011 01:22:41 -0500 Message-ID: <20111206062241.GD29233@sigill.intra.peff.net> References: <20111206062127.GA29046@sigill.intra.peff.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Tue Dec 06 07:23:14 2011 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RXoQr-0004m6-E4 for gcvg-git-2@lo.gmane.org; Tue, 06 Dec 2011 07:23:13 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932978Ab1LFGWs (ORCPT ); Tue, 6 Dec 2011 01:22:48 -0500 Received: from 99-108-226-0.lightspeed.iplsin.sbcglobal.net ([99.108.226.0]:40045 "EHLO peff.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932975Ab1LFGWn (ORCPT ); Tue, 6 Dec 2011 01:22:43 -0500 Received: (qmail 1146 invoked by uid 107); 6 Dec 2011 06:29:21 -0000 Received: from sigill.intra.peff.net (HELO sigill.intra.peff.net) (10.0.0.7) (smtp-auth username relayok, mechanism cram-md5) by peff.net (qpsmtpd/0.84) with ESMTPA; Tue, 06 Dec 2011 01:29:21 -0500 Received: by sigill.intra.peff.net (sSMTP sendmail emulation); Tue, 06 Dec 2011 01:22:41 -0500 Content-Disposition: inline In-Reply-To: <20111206062127.GA29046@sigill.intra.peff.net> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: All of the components of a credential struct can be found in a URL. For example, the URL: http://foo:bar@example.com/repo.git contains: protocol=http host=example.com path=repo.git username=foo password=bar We want to be able to turn URLs into broken-down credential structs so that we know two things: 1. Which parts of the username/password we still need 2. What the context of the request is (for prompting or as a key for storing credentials). This code is based on http_auth_init in http.c, but needed a few modifications in order to get all of the components that the credential object is interested in. Once the http code is switched over to the credential API, then http_auth_init can just go away. Signed-off-by: Jeff King --- Documentation/technical/api-credentials.txt | 4 ++ credential.c | 52 +++++++++++++++++++++++++++ credential.h | 1 + 3 files changed, 57 insertions(+), 0 deletions(-) diff --git a/Documentation/technical/api-credentials.txt b/Documentation/technical/api-credentials.txt index f624aef..21ca6a2 100644 --- a/Documentation/technical/api-credentials.txt +++ b/Documentation/technical/api-credentials.txt @@ -67,6 +67,10 @@ Functions that they may store the result to be used again. Any errors from helpers are ignored. +`credential_from_url`:: + + Parse a URL into broken-down credential fields. + Example ------- diff --git a/credential.c b/credential.c index 86397f3..c349b9a 100644 --- a/credential.c +++ b/credential.c @@ -2,6 +2,7 @@ #include "credential.h" #include "string-list.h" #include "run-command.h" +#include "url.h" void credential_init(struct credential *c) { @@ -232,3 +233,54 @@ void credential_reject(struct credential *c) c->password = NULL; c->approved = 0; } + +void credential_from_url(struct credential *c, const char *url) +{ + const char *at, *colon, *cp, *slash, *host, *proto_end; + + credential_clear(c); + + /* + * Match one of: + * (1) proto:///... + * (2) proto://@/... + * (3) proto://:@/... + */ + proto_end = strstr(url, "://"); + if (!proto_end) + return; + cp = proto_end + 3; + at = strchr(cp, '@'); + colon = strchr(cp, ':'); + slash = strchrnul(cp, '/'); + + if (!at || slash <= at) { + /* Case (1) */ + host = cp; + } + else if (!colon || at <= colon) { + /* Case (2) */ + c->username = url_decode_mem(cp, at - cp); + host = at + 1; + } else { + /* Case (3) */ + c->username = url_decode_mem(cp, colon - cp); + c->password = url_decode_mem(colon + 1, at - (colon + 1)); + host = at + 1; + } + + if (proto_end - url > 0) + c->protocol = xmemdupz(url, proto_end - url); + if (slash - host > 0) + c->host = url_decode_mem(host, slash - host); + /* Trim leading and trailing slashes from path */ + while (*slash == '/') + slash++; + if (*slash) { + char *p; + c->path = url_decode(slash); + p = c->path + strlen(c->path) - 1; + while (p > c->path && *p == '/') + *p-- = '\0'; + } +} diff --git a/credential.h b/credential.h index 2ea7d49..8a6d162 100644 --- a/credential.h +++ b/credential.h @@ -24,5 +24,6 @@ struct credential { void credential_reject(struct credential *); int credential_read(struct credential *, FILE *); +void credential_from_url(struct credential *, const char *url); #endif /* CREDENTIAL_H */ -- 1.7.8.rc4.4.g884ec