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-rw-r--r--libwaitress/src/CMakeLists.txt7
-rw-r--r--libwaitress/src/config.h.in1
-rw-r--r--libwaitress/src/main.c397
-rw-r--r--libwaitress/src/waitress.h72
4 files changed, 477 insertions, 0 deletions
diff --git a/libwaitress/src/CMakeLists.txt b/libwaitress/src/CMakeLists.txt
new file mode 100644
index 0000000..1facec9
--- /dev/null
+++ b/libwaitress/src/CMakeLists.txt
@@ -0,0 +1,7 @@
+set (CMAKE_C_FLAGS -Wall)
+
+configure_file (${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
+ ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+
+add_library (waitress STATIC main.c)
+
diff --git a/libwaitress/src/config.h.in b/libwaitress/src/config.h.in
new file mode 100644
index 0000000..60600a7
--- /dev/null
+++ b/libwaitress/src/config.h.in
@@ -0,0 +1 @@
+#define PACKAGE "${PACKAGE}"
diff --git a/libwaitress/src/main.c b/libwaitress/src/main.c
new file mode 100644
index 0000000..f51d991
--- /dev/null
+++ b/libwaitress/src/main.c
@@ -0,0 +1,397 @@
+/*
+Copyright (c) 2009
+ Lars-Dominik Braun <PromyLOPh@lavabit.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "config.h"
+#include "waitress.h"
+
+typedef struct {
+ char *buf;
+ char *pos;
+ size_t max;
+} WaitressFetchBufCbBuffer_t;
+
+inline void WaitressInit (WaitressHandle_t *waith) {
+ memset (waith, 0, sizeof (*waith));
+}
+
+inline void WaitressFree (WaitressHandle_t *waith) {
+ memset (waith, 0, sizeof (*waith));
+}
+
+/* Proxy set up?
+ * @param Waitress handle
+ * @return true|false
+ */
+inline char WaitressProxyEnabled (const WaitressHandle_t *waith) {
+ return *waith->proxyHost != '\0' && *waith->proxyPort != '\0';
+}
+
+/* Set http proxy
+ * @param waitress handle
+ * @param host
+ * @param port
+ */
+inline void WaitressSetProxy (WaitressHandle_t *waith, const char *host,
+ const char *port) {
+ strncpy (waith->proxyHost, host, sizeof (waith->proxyHost)-1);
+ strncpy (waith->proxyPort, port, sizeof (waith->proxyPort)-1);
+}
+
+/* urlencode post-data
+ * @param encode this
+ * @return malloc'ed encoded string, don't forget to free it
+ */
+char *WaitressUrlEncode (const char *in) {
+ /* worst case: encode all characters */
+ size_t inLen = strlen (in);
+ char *out = calloc (inLen * 3 + 1, sizeof (*in));
+ const char *inPos = in;
+ char *outPos = out;
+
+ while (inPos - in < inLen) {
+ if (!isalnum (*inPos) && *inPos != '_' && *inPos != '-' && *inPos != '.') {
+ *outPos++ = '%';
+ snprintf (outPos, 3, "%02x", *inPos);
+ outPos += 2;
+ } else {
+ /* copy character */
+ *outPos++ = *inPos;
+ }
+ ++inPos;
+ }
+
+ return out;
+}
+
+/* Split http url into host, port and path
+ * @param url
+ * @param return buffer: host
+ * @param host buffer size
+ * @param return buffer: port, defaults to 80
+ * @param port buffer size
+ * @param return buffer: path
+ * @param path buffer size
+ * @param 1 = ok, 0 = not a http url; if your buffers are too small horrible
+ * things will happen... But 1 is returned anyway.
+ */
+char WaitressSplitUrl (const char *url, char *retHost, size_t retHostSize,
+ char *retPort, size_t retPortSize, char *retPath, size_t retPathSize) {
+ size_t urlSize = strlen (url);
+ const char *urlPos = url, *lastPos;
+
+ if (urlSize > sizeof ("http://")-1 &&
+ memcmp (url, "http://", sizeof ("http://")-1) == 0) {
+ memset (retHost, 0, retHostSize);
+ memset (retPort, 0, retPortSize);
+ strncpy (retPort, "80", retPortSize-1);
+ memset (retPath, 0, retPathSize);
+
+ urlPos += sizeof ("http://")-1;
+ lastPos = urlPos;
+
+ /* find host */
+ while (*urlPos != ':' && *urlPos != '/' && urlPos - lastPos < retHostSize-1) {
+ *retHost++ = *urlPos++;
+ }
+ lastPos = urlPos;
+
+ /* port, if available */
+ if (*urlPos == ':') {
+ /* skip : */
+ ++urlPos;
+ ++lastPos;
+ while (*urlPos != '/' && urlPos - lastPos < retPortSize-1) {
+ *retPort++ = *urlPos++;
+ }
+ }
+ lastPos = urlPos;
+
+ /* path */
+ while (*urlPos != '\0' && *urlPos != '#' && urlPos - lastPos < retPathSize-1) {
+ *retPath++ = *urlPos++;
+ }
+ } else {
+ return 0;
+ }
+ return 1;
+}
+
+inline char WaitressSetUrl (WaitressHandle_t *waith, const char *url) {
+ return WaitressSplitUrl (url, waith->host, sizeof (waith->host),
+ waith->port, sizeof (waith->port), waith->path, sizeof (waith->path));
+}
+
+inline void WaitressSetHPP (WaitressHandle_t *waith, const char *host,
+ const char *port, const char *path) {
+ strncpy (waith->host, host, sizeof (waith->host)-1);
+ strncpy (waith->port, port, sizeof (waith->port)-1);
+ strncpy (waith->path, path, sizeof (waith->path)-1);
+}
+
+/* Callback for WaitressFetchBuf, appends received data to NULL-terminated buffer
+ * @param received data
+ * @param data size
+ * @param buffer structure
+ */
+char WaitressFetchBufCb (void *recvData, size_t recvDataSize, void *extraData) {
+ char *recvBytes = recvData;
+ WaitressFetchBufCbBuffer_t *buffer = extraData;
+
+ if (buffer->pos - buffer->buf + recvDataSize < buffer->max) {
+ memcpy (buffer->pos, recvBytes, recvDataSize);
+ buffer->pos += recvDataSize;
+ *buffer->pos = '\0';
+ } else {
+ printf (PACKAGE ": Buffer overflow!\n");
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Fetch string. Beware! This overwrites your waith->data pointer
+ * @param waitress handle
+ * @param Connect to host
+ * @param Port or service
+ * @param Resource path
+ * @param result buffer
+ * @param result buffer size
+ */
+WaitressReturn_t WaitressFetchBuf (WaitressHandle_t *waith, char *buf,
+ size_t bufSize) {
+ WaitressFetchBufCbBuffer_t buffer;
+
+ buffer.buf = buffer.pos = buf;
+ buffer.max = bufSize;
+ waith->data = &buffer;
+ waith->callback = WaitressFetchBufCb;
+
+ return WaitressFetchCall (waith);
+}
+
+#define CLOSE_RET(ret) close (sockfd); return ret;
+
+/* Receive data from host and call *callback ()
+ * @param waitress handle
+ * @param host
+ * @param port
+ * @param absolute path
+ * @param callback function
+ * @return WaitressReturn_t
+ */
+WaitressReturn_t WaitressFetchCall (WaitressHandle_t *waith) {
+ struct addrinfo hints, *res;
+ int sockfd;
+ char recvBuf[WAITRESS_RECV_BUFFER];
+ char statusBuf[3];
+ char writeBuf[2*1024];
+ ssize_t recvSize = 0;
+ WaitressReturn_t wRet = WAITRESS_RET_OK;
+
+ /* initialize */
+ waith->contentLength = 0;
+ waith->contentReceived = 0;
+ memset (&hints, 0, sizeof hints);
+
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+
+ /* Use proxy? */
+ if (WaitressProxyEnabled (waith)) {
+ if (getaddrinfo (waith->proxyHost, waith->proxyPort, &hints, &res) != 0) {
+ return WAITRESS_RET_GETADDR_ERR;
+ }
+ } else {
+ if (getaddrinfo (waith->host, waith->port, &hints, &res) != 0) {
+ return WAITRESS_RET_GETADDR_ERR;
+ }
+ }
+
+ if ((sockfd = socket (res->ai_family, res->ai_socktype, res->ai_protocol)) == -1) {
+ freeaddrinfo (res);
+ return WAITRESS_RET_SOCK_ERR;
+ }
+
+ if (connect (sockfd, res->ai_addr, res->ai_addrlen) == -1) {
+ freeaddrinfo (res);
+ return WAITRESS_RET_CONNECT_REFUSED;
+ }
+
+ freeaddrinfo (res);
+
+ /* send request */
+ if (WaitressProxyEnabled (waith)) {
+ snprintf (writeBuf, sizeof (writeBuf),
+ "%s http://%s:%s%s HTTP/1.1\r\nProxy-Connection: close\r\n",
+ (waith->method == WAITRESS_METHOD_GET ? "GET" : "POST"),
+ waith->host, waith->port, waith->path);
+ } else {
+ snprintf (writeBuf, sizeof (writeBuf),
+ "%s %s HTTP/1.1\r\nConnection: close\r\n",
+ (waith->method == WAITRESS_METHOD_GET ? "GET" : "POST"),
+ waith->path);
+ }
+ write (sockfd, writeBuf, strlen (writeBuf));
+
+ snprintf (writeBuf, sizeof (writeBuf),
+ "Host: %s\r\nUser-Agent: " PACKAGE "\r\n", waith->host);
+ write (sockfd, writeBuf, strlen (writeBuf));
+
+ if (waith->method == WAITRESS_METHOD_POST && waith->postData != NULL) {
+ snprintf (writeBuf, sizeof (writeBuf), "Content-Length: %u\r\n",
+ strlen (waith->postData));
+ write (sockfd, writeBuf, strlen (writeBuf));
+ }
+
+ if (waith->extraHeaders != NULL) {
+ write (sockfd, waith->extraHeaders, strlen (waith->extraHeaders));
+ }
+
+ write (sockfd, "\r\n", 2);
+
+ if (waith->method == WAITRESS_METHOD_POST && waith->postData != NULL) {
+ write (sockfd, waith->postData, strlen (waith->postData));
+ }
+
+ /* throw "HTTP/1.1 " (length 9) away... */
+ read (sockfd, recvBuf, 9);
+
+ /* parse status code */
+ read (sockfd, statusBuf, sizeof (statusBuf));
+ switch (statusBuf[0]) {
+ case '2':
+ if (statusBuf[1] == '0' && statusBuf[2] == '0') {
+ /* 200 OK */
+ } else {
+ CLOSE_RET (WAITRESS_RET_STATUS_UNKNOWN);
+ }
+ break;
+
+ case '4':
+ /* 40X? */
+ switch (statusBuf[1]) {
+ case '0':
+ switch (statusBuf[2]) {
+ case '3':
+ /* 403 Forbidden */
+ CLOSE_RET (WAITRESS_RET_FORBIDDEN);
+ break;
+
+ case '4':
+ /* 404 Not found */
+ CLOSE_RET (WAITRESS_RET_NOTFOUND);
+ break;
+
+ default:
+ CLOSE_RET (WAITRESS_RET_STATUS_UNKNOWN);
+ break;
+ }
+ break;
+
+ default:
+ CLOSE_RET (WAITRESS_RET_STATUS_UNKNOWN);
+ break;
+ }
+ break;
+
+ default:
+ CLOSE_RET (WAITRESS_RET_STATUS_UNKNOWN);
+ break;
+ }
+
+ /* read and parse header, max sizeof(recvBuf) */
+ char *bufPos = recvBuf, *hdrMark = NULL, *hdrBegin = recvBuf;
+ recvSize = read (sockfd, recvBuf, sizeof (recvBuf));
+
+ while (bufPos - recvBuf < recvSize) {
+ /* mark header name end */
+ if (*bufPos == ':' && hdrMark == NULL) {
+ hdrMark = bufPos;
+ } else if (*bufPos == '\n') {
+ /* parse header */
+ if (hdrMark != NULL && (bufPos - hdrBegin > 12) &&
+ memcmp ("Content-Length", hdrBegin, 12) == 0) {
+ /* unsigned integer max: 4,294,967,295 = 10 digits */
+ char tmpSizeBuf[11];
+
+ memset (tmpSizeBuf, 0, sizeof (tmpSizeBuf));
+
+ /* skip ':' => +1; skip '\r' suffix => -1 */
+ if ((bufPos-1) - (hdrMark+1) > sizeof (tmpSizeBuf)-1) {
+ CLOSE_RET (WAITRESS_RET_HDR_OVERFLOW);
+ }
+ memcpy (tmpSizeBuf, hdrMark+1, (bufPos-1) - (hdrMark+1));
+ waith->contentLength = atol (tmpSizeBuf);
+ }
+
+ /* end header, containts \r\n == empty line */
+ if (bufPos - hdrBegin < 2 && hdrMark == NULL) {
+ ++bufPos;
+ /* push remaining bytes to callback */
+ if (bufPos - recvBuf < recvSize) {
+ waith->contentReceived += recvSize - (bufPos - recvBuf);
+ if (!waith->callback (bufPos, recvSize - (bufPos - recvBuf),
+ waith->data)) {
+ CLOSE_RET (WAITRESS_RET_CB_ABORT);
+ }
+ }
+ break;
+ }
+
+ hdrBegin = bufPos+1;
+ hdrMark = NULL;
+ }
+ ++bufPos;
+ }
+
+ /* receive content */
+ do {
+ recvSize = read (sockfd, recvBuf, sizeof (recvBuf));
+ if (recvSize > 0) {
+ waith->contentReceived += recvSize;
+ if (!waith->callback (recvBuf, recvSize, waith->data)) {
+ wRet = WAITRESS_RET_CB_ABORT;
+ break;
+ }
+ }
+ } while (recvSize > 0);
+
+ close (sockfd);
+
+ if (wRet == WAITRESS_RET_OK && waith->contentReceived < waith->contentLength) {
+ return WAITRESS_RET_PARTIAL_FILE;
+ }
+ return wRet;
+}
+
+#undef CLOSE_RET
+
diff --git a/libwaitress/src/waitress.h b/libwaitress/src/waitress.h
new file mode 100644
index 0000000..cc999b3
--- /dev/null
+++ b/libwaitress/src/waitress.h
@@ -0,0 +1,72 @@
+/*
+Copyright (c) 2009
+ Lars-Dominik Braun <PromyLOPh@lavabit.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef _WAITRESS_H
+#define _WAITRESS_H
+
+#include <stdlib.h>
+
+#define WAITRESS_HOST_SIZE 100
+/* max: 65,535 */
+#define WAITRESS_PORT_SIZE 6
+#define WAITRESS_PATH_SIZE 1000
+#define WAITRESS_RECV_BUFFER 10*1024
+
+typedef enum {WAITRESS_METHOD_GET = 0, WAITRESS_METHOD_POST} WaitressMethod_t;
+
+typedef struct {
+ char host[WAITRESS_HOST_SIZE];
+ char port[WAITRESS_PORT_SIZE];
+ char path[WAITRESS_PATH_SIZE];
+ WaitressMethod_t method;
+ const char *extraHeaders;
+ const char *postData;
+ size_t contentLength;
+ size_t contentReceived;
+ char proxyHost[WAITRESS_HOST_SIZE];
+ char proxyPort[WAITRESS_PORT_SIZE];
+ /* extra data handed over to callback function */
+ void *data;
+ char (*callback) (void *, size_t, void *);
+} WaitressHandle_t;
+
+typedef enum {WAITRESS_RET_ERR = 0, WAITRESS_RET_OK, WAITRESS_RET_STATUS_UNKNOWN,
+ WAITRESS_RET_NOTFOUND, WAITRESS_RET_FORBIDDEN, WAITRESS_RET_CONNECT_REFUSED,
+ WAITRESS_RET_SOCK_ERR, WAITRESS_RET_GETADDR_ERR,
+ WAITRESS_RET_CB_ABORT, WAITRESS_RET_HDR_OVERFLOW,
+ WAITRESS_RET_PARTIAL_FILE} WaitressReturn_t;
+
+void WaitressInit (WaitressHandle_t *);
+void WaitressFree (WaitressHandle_t *);
+void WaitressSetProxy (WaitressHandle_t *, const char *, const char *);
+char *WaitressUrlEncode (const char *);
+char WaitressSplitUrl (const char *, char *, size_t, char *, size_t, char *,
+ size_t);
+inline char WaitressSetUrl (WaitressHandle_t *, const char *);
+inline void WaitressSetHPP (WaitressHandle_t *, const char *, const char *,
+ const char *);
+WaitressReturn_t WaitressFetchBuf (WaitressHandle_t *, char *, size_t);
+WaitressReturn_t WaitressFetchCall (WaitressHandle_t *);
+
+#endif /* _WAITRESS_H */
+
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