507 lines
12 KiB
C
507 lines
12 KiB
C
/***************************************************************************
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* Copyright (C) 2007,2008,2009 Øyvind Harboe *
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* oyvind.harboe@zylin.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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/* some bits were copied from ahttpd which is under eCos license and
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* copyright to FSF
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "telnet_server.h"
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#include <target/target.h>
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#include <microhttpd.h>
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#include <pthread.h>
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#include <signal.h>
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#define PAGE_NOT_FOUND "<html><head><title > File not found</title></head><body > File not found</body></html>"
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static pthread_mutex_t mutex;
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void openocd_sleep_prelude(void)
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{
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pthread_mutex_unlock(&mutex);
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}
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void openocd_sleep_postlude(void)
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{
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pthread_mutex_lock(&mutex);
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}
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int loadFile(const char *name, void **data, size_t *len);
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static const char *appendf(const char *prev, const char *format, ...)
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{
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va_list ap;
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va_start(ap, format);
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char *string = alloc_vprintf(format, ap);
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va_end(ap);
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char *string2 = NULL;
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if (string != NULL)
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{
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string2 = alloc_printf("%s%s", (prev == NULL) ? "" : prev, string);
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}
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if (prev != NULL)
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{
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free((void *)prev);
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}
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if (string == NULL)
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free(string);
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return string2;
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}
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static const char *httpd_exec_cgi_tcl_error(Jim_Interp *interp)
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{
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int len, i;
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const char *t = NULL;
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t = appendf(t, "<html><body>\n");
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t = appendf(t, "Runtime error, file \"%s\", line %d:<br>",
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interp->errorFileName, interp->errorLine);
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t = appendf(t, " %s < br>", Jim_GetString(interp->result, NULL));
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Jim_ListLength(interp, interp->stackTrace, &len);
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for (i = 0; i < len; i += 3)
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{
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Jim_Obj *objPtr;
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const char *proc, *file, *line;
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Jim_ListIndex(interp, interp->stackTrace, i, &objPtr, JIM_NONE);
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proc = Jim_GetString(objPtr, NULL);
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Jim_ListIndex(interp, interp->stackTrace, i + 1, &objPtr, JIM_NONE);
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file = Jim_GetString(objPtr, NULL);
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Jim_ListIndex(interp, interp->stackTrace, i + 2, &objPtr, JIM_NONE);
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line = Jim_GetString(objPtr, NULL);
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t = appendf(t, "In procedure '%s' called at file \"%s\", line %s < br>",
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proc, file, line);
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}
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t = appendf(t, "</html></body>\n");
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return t;
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}
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static int httpd_Jim_Command_writeform(Jim_Interp *interp, int argc,
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Jim_Obj * const *argv)
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{
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if (argc != 3)
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{
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Jim_WrongNumArgs(interp, 1, argv, "method ?CMD_ARGV ...?");
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return JIM_ERR;
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}
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char *name = (char*) Jim_GetString(argv[1], NULL);
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char *file = (char*) Jim_GetString(argv[2], NULL);
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// Find length
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const char *data;
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int actual;
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int retcode;
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const char *script = alloc_printf(
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"set dummy_val $httppostdata(%s); set dummy_val",
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name);
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retcode = Jim_Eval_Named(interp, script, __FILE__, __LINE__);
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free((void *) script);
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if (retcode != JIM_OK)
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return retcode;
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data = Jim_GetString(Jim_GetResult(interp), &actual);
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FILE *f = fopen(file, "wb");
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if (NULL == f)
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{
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Jim_SetResultString(interp, "Could not create file", -1);
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return JIM_ERR;
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}
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int result = fwrite(data, 1, actual, f);
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fclose(f);
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if (result != actual)
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{
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Jim_SetResultString(interp, "Could not write to file", -1);
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return JIM_ERR;
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}
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return JIM_OK;
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}
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int
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httpd_Jim_Command_formfetch(Jim_Interp *interp,
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int argc,
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Jim_Obj *const *argv)
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{
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if (argc != 2)
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{
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Jim_WrongNumArgs(interp, 1, argv, "method ?CMD_ARGV ...?");
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return JIM_ERR;
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}
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char *name = (char*)Jim_GetString(argv[1], NULL);
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const char *script = alloc_printf(
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"set dummy_val $httppostdata(%s); set dummy_val",
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name);
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int retcode = Jim_Eval_Named(interp, script, __FILE__, __LINE__);
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free((void *) script);
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if (retcode != JIM_OK)
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Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
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else
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Jim_SetResult(interp, Jim_GetResult(interp));
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return JIM_OK;
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}
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struct httpd_request
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{
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int post;
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Jim_Interp *interp;
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struct MHD_PostProcessor *postprocessor;
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//Jim_Obj *dict;
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int complete; /* did we receive the entire post ? */
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};
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static void request_completed(void *cls, struct MHD_Connection *connection,
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void **con_cls, enum MHD_RequestTerminationCode toe)
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{
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struct httpd_request *r = (struct httpd_request*) *con_cls;
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if (NULL == r)
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return;
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if (r->postprocessor)
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{
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openocd_sleep_postlude();
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MHD_destroy_post_processor(r->postprocessor);
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openocd_sleep_prelude();
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}
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free(r);
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*con_cls = NULL;
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}
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/* append to said key in dictionary */
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static void append_key(Jim_Interp *interp,
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struct httpd_request *r, const char *key,
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const char *data, size_t off, size_t size)
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{
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Jim_Obj *keyObj = Jim_NewStringObj(interp, key, -1);
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Jim_IncrRefCount(keyObj);
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Jim_Obj *value = NULL;
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Jim_Obj *dict = Jim_GetVariableStr(interp, "httppostdata", 0);
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if (dict != NULL)
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{
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if (Jim_DictKey(interp, dict, keyObj, &value, 0) != JIM_OK)
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{
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value = NULL;
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}
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else
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{
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Jim_IncrRefCount(value);
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}
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}
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if (value == NULL)
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{
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value = Jim_NewStringObj(interp, "", -1);
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Jim_IncrRefCount(value);
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}
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/* create a new object we append to and insert into this location */
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Jim_Obj *newObj = Jim_NewStringObj(interp, "", -1);
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Jim_IncrRefCount(newObj);
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Jim_AppendObj(interp, newObj, value);
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Jim_AppendString(interp, newObj, data, size);
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/* uhh... use name here of dictionary */
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dict = Jim_NewStringObj(interp, "httppostdata", -1);
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Jim_IncrRefCount(dict);
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Jim_SetDictKeysVector(interp, dict, &keyObj, 1, newObj);
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Jim_DecrRefCount(interp, dict);
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Jim_DecrRefCount(interp, value);
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Jim_DecrRefCount(interp, newObj);
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Jim_DecrRefCount(interp, keyObj);
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}
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/* append data to each key */
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static int iterate_post(void *con_cls, enum MHD_ValueKind kind,
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const char *key, const char *filename, const char *content_type,
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const char *transfer_encoding, const char *data, uint64_t off,
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size_t size)
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{
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struct httpd_request *r = (struct httpd_request*) con_cls;
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append_key(r->interp, r, key, data, off, size);
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return MHD_YES;
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}
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static int record_arg(void *cls, enum MHD_ValueKind kind, const char *key,
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const char *value)
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{
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struct httpd_request *r = (struct httpd_request*) cls;
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append_key(r->interp, r, key, value, 0, strlen(value));
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return MHD_YES;
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}
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static int handle_request(Jim_Interp *interp,
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struct MHD_Connection * connection, const char * url)
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{
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struct MHD_Response * response;
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int ret;
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const char *suffix;
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suffix = strrchr(url, '.');
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if ((suffix != NULL) && (strcmp(suffix, ".tcl") == 0))
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{
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printf("Run tcl %s\n", url);
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int retcode;
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const char *script = alloc_printf(
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"global httpdata; source {%s}; set httpdata", url);
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retcode = Jim_Eval_Named(interp, script, __FILE__, __LINE__);
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free((void *) script);
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if (retcode != JIM_OK)
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{
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printf("Tcl failed\n");
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const char *t = httpd_exec_cgi_tcl_error(interp);
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if (t == NULL)
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return MHD_NO;
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response = MHD_create_response_from_data(strlen(t), (void *) t,
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MHD_YES, MHD_NO);
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ret = MHD_queue_response(connection,
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MHD_HTTP_INTERNAL_SERVER_ERROR, response);
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MHD_destroy_response(response);
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return ret;
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}
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else
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{
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LOG_DEBUG("Tcl OK");
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/* FIX!!! how to handle mime types??? */
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const char *result;
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int reslen;
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result = Jim_GetString(Jim_GetResult(interp), &reslen);
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response = MHD_create_response_from_data(reslen, (void *) result,
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MHD_NO, MHD_YES);
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ret = MHD_queue_response(connection,
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MHD_HTTP_INTERNAL_SERVER_ERROR, response);
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MHD_destroy_response(response);
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return ret;
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}
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}
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else
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{
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void *data;
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size_t len;
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int retval = loadFile(url, &data, &len);
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if (retval != ERROR_OK)
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{
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printf("Did not find %s\n", url);
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response = MHD_create_response_from_data(strlen(PAGE_NOT_FOUND),
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(void *) PAGE_NOT_FOUND, MHD_NO, MHD_NO);
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ret = MHD_queue_response(connection, MHD_HTTP_NOT_FOUND, response);
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MHD_destroy_response(response);
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return ret;
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}
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LOG_DEBUG("Serving %s length=%zu", url, len);
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/* serve file directly */
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response = MHD_create_response_from_data(len, data, MHD_YES, MHD_NO);
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/* Should we expose mimetype via tcl here or just let the browser
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guess?
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MHD_add_response_header(response, "Content-Type", "image/png");
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*/
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ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
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MHD_destroy_response(response);
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//free(data);
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return ret;
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}
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}
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static int ahc_echo_inner(void * cls, struct MHD_Connection * connection,
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const char * url, const char * method, const char * version,
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const char * upload_data, size_t * upload_data_size, void ** ptr)
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{
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Jim_Interp *interp = (Jim_Interp *)cls;
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int post = 0;
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if (0 == strcmp(method, "POST"))
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{
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post = 1;
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}
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else if (0 == strcmp(method, "GET"))
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{
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}
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else
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{
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return MHD_NO; /* unexpected method */
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}
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struct httpd_request *r;
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if (*ptr == NULL)
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{
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/* The first time only the headers are valid,
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do not respond in the first round... */
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*ptr = malloc(sizeof(struct httpd_request));
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if (*ptr == NULL)
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return MHD_NO;
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memset(*ptr, 0, sizeof(struct httpd_request));
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r = (struct httpd_request *) *ptr;
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r->interp = interp;
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r->post = post;
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Jim_SetVariableStr(interp, "httppostdata", Jim_NewDictObj(interp, NULL, 0));
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/* fill in url query strings in dictionary */
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MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND,
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record_arg, r);
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if (r->post)
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{
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r->postprocessor = MHD_create_post_processor(connection, 2048
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* 1024, &iterate_post, r);
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}
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return MHD_YES;
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}
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r = (struct httpd_request *) *ptr;
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if (r->post)
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{
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/* consume post data */
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if (*upload_data_size)
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{
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MHD_post_process(r->postprocessor, upload_data, *upload_data_size);
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*upload_data_size = 0;
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return MHD_YES;
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}
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else
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{
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}
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} else
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{
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}
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/* hand over to request who will be using it. */
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// r->dict = NULL;
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/* FIX!!!! we need more advanced handling of url's to avoid them
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* being subverted to evil purposes
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*/
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const char *httpd_dir = PKGDATADIR "/httpd";
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if (*url=='/')
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{
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url++; /* skip '/' */
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}
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if (!*url)
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url="index.tcl";
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const char *file_name = alloc_printf("%s/%s", httpd_dir, url);
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int result = handle_request(interp, connection, file_name);
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free((void *)file_name);
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return result;
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}
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static int ahc_echo(void * cls, struct MHD_Connection * connection,
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const char * url, const char * method, const char * version,
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const char * upload_data, size_t * upload_data_size, void ** ptr)
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{
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int result;
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openocd_sleep_postlude();
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result = ahc_echo_inner(cls, connection, url, method, version, upload_data, upload_data_size, ptr);
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openocd_sleep_prelude();
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return result;
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}
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static struct MHD_Daemon * d;
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static const struct command_registration httpd_command_handlers[] = {
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{
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.name = "formfetch",
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.jim_handler = httpd_Jim_Command_formfetch,
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.mode = COMMAND_EXEC,
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.usage = "parameter_name",
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.help = "Reads a posted form value.",
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},
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{
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.name = "writeform",
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.jim_handler = httpd_Jim_Command_writeform,
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.mode = COMMAND_EXEC,
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.usage = "parameter_name filename",
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.help = "Writes a form value to a file.",
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},
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COMMAND_REGISTRATION_DONE
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};
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int httpd_start(struct command_context *cmd_ctx)
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{
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pthread_mutexattr_t attr;
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pthread_mutexattr_init(&attr);
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pthread_mutex_init(&mutex, &attr);
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int port = 8888;
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LOG_USER("Launching httpd server on port %d", port);
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d = MHD_start_daemon(MHD_USE_SELECT_INTERNALLY, port, NULL, NULL,
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&ahc_echo, cmd_ctx->interp,
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MHD_OPTION_NOTIFY_COMPLETED, request_completed, NULL, /* Closure... what's that??? */
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MHD_OPTION_END);
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if (d == NULL)
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return ERROR_FAIL;
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return register_commands(cmd_ctx, NULL, httpd_command_handlers);
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}
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void httpd_stop(void)
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{
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MHD_stop_daemon(d);
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pthread_mutex_destroy(&mutex);
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}
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