From: Wilfried Goesgens <dothebart@citadel.org>
Date: Tue, 6 Sep 2011 18:52:59 +0000 (+0000)
Subject: Libcitadel resync; forgot to add that one.
X-Git-Tag: v8.01~59
X-Git-Url: https://code.citadel.org/?p=citadel.git;a=commitdiff_plain;h=ca16ddcf59744c0f21ac41aa7aef8ee91c3478bf

Libcitadel resync; forgot to add that one.
---

diff --git a/libcitadel/lib/urlhandling.c b/libcitadel/lib/urlhandling.c
new file mode 100644
index 000000000..cfadf345f
--- /dev/null
+++ b/libcitadel/lib/urlhandling.c
@@ -0,0 +1,162 @@
+#include "sysdep.h"
+#include <ctype.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/select.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include "libcitadel.h"
+
+/**
+ * @defgroup URLHandling ParsedURL object to handle connection data
+ */
+
+/**
+ * @ingroup URLHandling
+ * @brief frees a linked list of ParsedURL 
+ * @param Url (list) of ParsedURL to be freet; Pointer is NULL'ed for the caller.
+ */
+void FreeURL(ParsedURL** Url)
+{
+	if (*Url != NULL) {
+		FreeStrBuf(&(*Url)->URL);
+		FreeStrBuf(&(*Url)->UrlWithoutCred);
+		FreeStrBuf(&(*Url)->CurlCreds);
+		if ((*Url)->Next != NULL)
+			FreeURL(&(*Url)->Next);
+		free(*Url);
+		*Url = NULL;
+	}
+}
+
+/**
+ * @ingroup URLHandling
+ * @brief parses the string provided with UrlStr into *Url
+ * @param Url on success this contains the parsed object; needs to be free'd by caller.
+ * @param UrlStr String we should parse into parts
+ * @param DefaultPort Which is the default port here?
+ */
+int ParseURL(ParsedURL **Url, StrBuf *UrlStr, unsigned short DefaultPort)
+{
+	const char *pch, *pEndHost, *pPort, *pCredEnd, *pUserEnd;
+	ParsedURL *url = (ParsedURL *)malloc(sizeof(ParsedURL));
+	memset(url, 0, sizeof(ParsedURL));
+
+	url->af = AF_INET;
+	url->Port =  DefaultPort;
+	/*
+	 * http://username:passvoid@[ipv6]:port/url 
+	 */
+	url->URL = NewStrBufDup(UrlStr);
+	url->Host = pch = ChrPtr(url->URL);
+	url->LocalPart = strchr(pch, '/');
+	if (url->LocalPart != NULL) {
+		if ((*(url->LocalPart + 1) == '/') && 
+		    (*(url->LocalPart - 1) == ':')) { /* TODO: find default port for this protocol... */
+			url->Host = url->LocalPart + 2;
+			url->LocalPart = strchr(url->Host, '/');
+			if (url->LocalPart != NULL)
+			{
+			    StrBufPeek(url->URL, url->LocalPart, 0, '\0');
+			    url->LocalPart++;
+			}
+		}
+	}
+	if (url->LocalPart == NULL) {
+		url->LocalPart = pch + StrLength(url->URL);
+	}
+
+	pCredEnd = strchr(pch, '@');
+	if (pCredEnd >= url->LocalPart)
+		pCredEnd = NULL;
+	if (pCredEnd != NULL)
+	{
+		url->User = url->Host;
+		url->Host = pCredEnd + 1;
+		pUserEnd = strchr(url->User, ':');
+		
+		if (pUserEnd > pCredEnd)
+			pUserEnd = pCredEnd;
+		else {
+			url->Pass = pUserEnd + 1;
+		}
+		StrBufPeek(url->URL, pUserEnd, 0, '\0');
+		StrBufPeek(url->URL, pCredEnd, 0, '\0');		
+	}
+	
+	pPort = NULL;
+	if (*url->Host == '[') {
+		url->Host ++;
+		pEndHost = strchr(url->Host, ']');
+		if (pEndHost == NULL) {
+			FreeStrBuf(&url->URL);
+			free(url);
+			return 0; /* invalid syntax, no ipv6 */
+		}
+		StrBufPeek(url->URL, pEndHost, 0, '\0');
+		if (*(pEndHost + 1) == ':'){
+			StrBufPeek(url->URL, pEndHost + 1, 0, '\0');
+			pPort = pEndHost + 2;
+		}
+		url->af = AF_INET6;
+	}
+	else {
+		pPort = strchr(url->Host, ':');
+		if (pPort != NULL) {
+			StrBufPeek(url->URL, pPort, 0, '\0');
+			pPort ++;
+		}
+	}
+	if (pPort != NULL)
+		url->Port = atol(pPort);
+	if (url->IPv6)
+	{
+	    url->IsIP = inet_pton(AF_INET6, url->Host, &url->Addr.sin6_addr);
+	    if (url->IsIP)
+	    {
+		url->Addr.sin6_port = htons(url->Port);
+		url->Addr.sin6_port = AF_INET6;
+	    }
+	}
+	else
+	{
+	    url->IsIP = inet_pton(AF_INET, url->Host, &((struct sockaddr_in *)&(url->Addr))->sin_addr);
+	    if (url->IsIP)
+	    {
+		((struct sockaddr_in *)&(url->Addr))->sin_port = htons(url->Port);
+		((struct sockaddr_in *)&(url->Addr))->sin_family = AF_INET;
+	    }	
+	}	
+	*Url = url;
+	return 1;
+}
+
+void CurlPrepareURL(ParsedURL *Url)
+{
+	if (!strcmp(ChrPtr(Url->URL), "http"))
+		Url->UrlWithoutCred = NewStrBufPlain(ChrPtr(Url->URL), -1);
+	else 
+		Url->UrlWithoutCred = NewStrBufPlain(HKEY("http://"));
+	StrBufAppendBufPlain(Url->UrlWithoutCred, Url->Host, -1, 0);
+
+	StrBufAppendBufPlain(Url->UrlWithoutCred, HKEY(":"), 0);
+
+	StrBufAppendPrintf(Url->UrlWithoutCred, "%u", Url->Port);
+
+	StrBufAppendBufPlain(Url->UrlWithoutCred, HKEY("/"), 0);
+	if (Url->LocalPart)
+	{
+	    StrBufAppendBufPlain(Url->UrlWithoutCred, Url->LocalPart, -1, 0);
+	}
+	if (Url->User != NULL)
+	{
+		Url->CurlCreds = NewStrBufPlain(Url->User, -1);
+		StrBufAppendBufPlain(Url->CurlCreds, HKEY(":"), 0);
+		if (Url->Pass != NULL)
+			StrBufAppendBufPlain(Url->CurlCreds, Url->Pass, -1, 0);
+	}
+	Url->PlainUrl = ChrPtr(Url->UrlWithoutCred);
+}