camera_online_server - this will take a image from C328 serial camera an…

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Mitesh Patel / Mbed 2 deprecated camera_online_server

this will take a image from C328 serial camera and store those images in mbed flash as html and this html page is uploaded into the server at ip:192.168.1.2

Dependencies: mbed

lwip/HTTPServer/HTTPRPC.h@0:e1a0471e5ffb, 2010-12-15 (annotated)

Committer:: mitesh2patel
Date:: Wed Dec 15 15:01:56 2010 +0000
Revision:: 0:e1a0471e5ffb

Who changed what in which revision?

User	Revision	Line number	New contents of line
mitesh2patel	0:e1a0471e5ffb	1	// HTTPRPC.h
mitesh2patel	0:e1a0471e5ffb	2	// Modified by iva2k
mitesh2patel	0:e1a0471e5ffb	3	// Improved URL string handling
mitesh2patel	0:e1a0471e5ffb	4	//
mitesh2patel	0:e1a0471e5ffb	5
mitesh2patel	0:e1a0471e5ffb	6	#ifndef HTTPRPC_H
mitesh2patel	0:e1a0471e5ffb	7	#define HTTPRPC_H
mitesh2patel	0:e1a0471e5ffb	8
mitesh2patel	0:e1a0471e5ffb	9	#include "HTTPServer.h"
mitesh2patel	0:e1a0471e5ffb	10	#include "platform.h"
mitesh2patel	0:e1a0471e5ffb	11	#ifdef MBED_RPC
mitesh2patel	0:e1a0471e5ffb	12	#include "rpc.h"
mitesh2patel	0:e1a0471e5ffb	13
mitesh2patel	0:e1a0471e5ffb	14	#ifndef HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	15	#define HTTPRPC_USE_URI_FIELDS 1
mitesh2patel	0:e1a0471e5ffb	16	#endif
mitesh2patel	0:e1a0471e5ffb	17
mitesh2patel	0:e1a0471e5ffb	18	/**
mitesh2patel	0:e1a0471e5ffb	19	* A datastorage helper for the HTTPRPC class
mitesh2patel	0:e1a0471e5ffb	20	*/
mitesh2patel	0:e1a0471e5ffb	21	class HTTPRPCData : public HTTPData {
mitesh2patel	0:e1a0471e5ffb	22	public: char result[255];
mitesh2patel	0:e1a0471e5ffb	23	};
mitesh2patel	0:e1a0471e5ffb	24
mitesh2patel	0:e1a0471e5ffb	25	/**
mitesh2patel	0:e1a0471e5ffb	26	* Thsi class enables you to make rpc calls to your mbed.
mitesh2patel	0:e1a0471e5ffb	27	* Furthermore it is a good example how to write a HTTPHandler for small data chunks.
mitesh2patel	0:e1a0471e5ffb	28	*/
mitesh2patel	0:e1a0471e5ffb	29	class HTTPRPC : public HTTPHandler {
mitesh2patel	0:e1a0471e5ffb	30	public:
mitesh2patel	0:e1a0471e5ffb	31	/**
mitesh2patel	0:e1a0471e5ffb	32	* We have to know the prefix for the RPCHandler.
mitesh2patel	0:e1a0471e5ffb	33	* A good default choice is /rpc so we made this default.
mitesh2patel	0:e1a0471e5ffb	34	*/
mitesh2patel	0:e1a0471e5ffb	35	HTTPRPC(const char *path = "/rpc") : HTTPHandler(path) {}
mitesh2patel	0:e1a0471e5ffb	36	HTTPRPC(HTTPServer server, const char path = "/rpc") : HTTPHandler(path) { server->addHandler(this); }
mitesh2patel	0:e1a0471e5ffb	37
mitesh2patel	0:e1a0471e5ffb	38	private:
mitesh2patel	0:e1a0471e5ffb	39	/**
mitesh2patel	0:e1a0471e5ffb	40	* If you need some Headerfeelds you have tor register the feelds here.
mitesh2patel	0:e1a0471e5ffb	41	*/
mitesh2patel	0:e1a0471e5ffb	42	// virtual void reg(HTTPServer *svr) {
mitesh2patel	0:e1a0471e5ffb	43	// svr->registerField("Content-Length");
mitesh2patel	0:e1a0471e5ffb	44	// }
mitesh2patel	0:e1a0471e5ffb	45
mitesh2patel	0:e1a0471e5ffb	46	/**
mitesh2patel	0:e1a0471e5ffb	47	* If a new RPCRequest Header is complete received the server will call this function.
mitesh2patel	0:e1a0471e5ffb	48	* This is the right place for preparing our datastructures.
mitesh2patel	0:e1a0471e5ffb	49	* Furthermore we will execute the rpc call and store the anwere.
mitesh2patel	0:e1a0471e5ffb	50	* But we will not send a response. This will be hapen in the send method.
mitesh2patel	0:e1a0471e5ffb	51	*/
mitesh2patel	0:e1a0471e5ffb	52	virtual HTTPStatus init(HTTPConnection *con) const {
mitesh2patel	0:e1a0471e5ffb	53	HTTPRPCData *data = new HTTPRPCData();
mitesh2patel	0:e1a0471e5ffb	54	con->data = data;
mitesh2patel	0:e1a0471e5ffb	55	char *query = con->getURL()+strlen(_prefix);
mitesh2patel	0:e1a0471e5ffb	56	query = clean(query);
mitesh2patel	0:e1a0471e5ffb	57	rpc(query, data->result);
mitesh2patel	0:e1a0471e5ffb	58
mitesh2patel	0:e1a0471e5ffb	59	const char *nfields = "Cache-Control: no-cache, no-store, must-revalidate\r\nPragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GM";
mitesh2patel	0:e1a0471e5ffb	60	char old = (char )con->getHeaderFields();
mitesh2patel	0:e1a0471e5ffb	61	int oldlen = strlen(old);
mitesh2patel	0:e1a0471e5ffb	62	int atrlen = strlen(nfields);
mitesh2patel	0:e1a0471e5ffb	63	char *fields = new char[atrlen+oldlen+3];
mitesh2patel	0:e1a0471e5ffb	64	strcpy(fields,old);
mitesh2patel	0:e1a0471e5ffb	65	fields[oldlen+0] = '\r';
mitesh2patel	0:e1a0471e5ffb	66	fields[oldlen+1] = '\n';
mitesh2patel	0:e1a0471e5ffb	67	strcpy(&fields[oldlen+2], nfields);
mitesh2patel	0:e1a0471e5ffb	68	fields[atrlen+2+oldlen] = '\0';
mitesh2patel	0:e1a0471e5ffb	69	con->setHeaderFields(fields);
mitesh2patel	0:e1a0471e5ffb	70	if(*old) {
mitesh2patel	0:e1a0471e5ffb	71	delete old;
mitesh2patel	0:e1a0471e5ffb	72	}
mitesh2patel	0:e1a0471e5ffb	73
mitesh2patel	0:e1a0471e5ffb	74	con->setLength(strlen(data->result));
mitesh2patel	0:e1a0471e5ffb	75	return HTTP_OK;
mitesh2patel	0:e1a0471e5ffb	76	}
mitesh2patel	0:e1a0471e5ffb	77
mitesh2patel	0:e1a0471e5ffb	78	/**
mitesh2patel	0:e1a0471e5ffb	79	* If we got an POST request the send method will not be executed.
mitesh2patel	0:e1a0471e5ffb	80	* If we want to send data we have to trigger it the first time by ourself.
mitesh2patel	0:e1a0471e5ffb	81	* So we execute the send method.
mitesh2patel	0:e1a0471e5ffb	82	*
mitesh2patel	0:e1a0471e5ffb	83	* If the rpc call is the content of the POST body we would not be able to execute it.
mitesh2patel	0:e1a0471e5ffb	84	* Were parsing only the URL.
mitesh2patel	0:e1a0471e5ffb	85	*/
mitesh2patel	0:e1a0471e5ffb	86	virtual HTTPHandle data(HTTPConnection con, void , int) const {
mitesh2patel	0:e1a0471e5ffb	87	return send(con, con->sndbuf());
mitesh2patel	0:e1a0471e5ffb	88	}
mitesh2patel	0:e1a0471e5ffb	89
mitesh2patel	0:e1a0471e5ffb	90	/**
mitesh2patel	0:e1a0471e5ffb	91	* Send the result back to the client.
mitesh2patel	0:e1a0471e5ffb	92	* If we have not enought space wait for next time.
mitesh2patel	0:e1a0471e5ffb	93	*/
mitesh2patel	0:e1a0471e5ffb	94	virtual HTTPHandle send(HTTPConnection *con, int maximum) const {
mitesh2patel	0:e1a0471e5ffb	95	HTTPRPCData data = static_cast<HTTPRPCData >(con->data);
mitesh2patel	0:e1a0471e5ffb	96	if(maximum>64) {
mitesh2patel	0:e1a0471e5ffb	97	con->write(data->result, con->getLength());
mitesh2patel	0:e1a0471e5ffb	98	return HTTP_SuccessEnded;
mitesh2patel	0:e1a0471e5ffb	99	} else {
mitesh2patel	0:e1a0471e5ffb	100	// To less memory.
mitesh2patel	0:e1a0471e5ffb	101	return HTTP_SenderMemory;
mitesh2patel	0:e1a0471e5ffb	102	}
mitesh2patel	0:e1a0471e5ffb	103	}
mitesh2patel	0:e1a0471e5ffb	104
mitesh2patel	0:e1a0471e5ffb	105	inline bool is_hex(const char a) const {
mitesh2patel	0:e1a0471e5ffb	106	return (a>='0' && a<='9') \|\| (a>='A' && a<='F') \|\| (a>='a' && a<='f');
mitesh2patel	0:e1a0471e5ffb	107	}
mitesh2patel	0:e1a0471e5ffb	108	inline char hex_nib(const char a) const {
mitesh2patel	0:e1a0471e5ffb	109	return 0xf & (
mitesh2patel	0:e1a0471e5ffb	110	(a>='0' && a<='9') ? (a-'0' ) :
mitesh2patel	0:e1a0471e5ffb	111	(a>='A' && a<='F') ? (a-'A'+10) :
mitesh2patel	0:e1a0471e5ffb	112	(a>='a' && a<='f') ? (a-'a'+10) : 0
mitesh2patel	0:e1a0471e5ffb	113	);
mitesh2patel	0:e1a0471e5ffb	114	}
mitesh2patel	0:e1a0471e5ffb	115	inline char hex_byte(const char *str) const {
mitesh2patel	0:e1a0471e5ffb	116	return (hex_nib(str) << 4) \| hex_nib((str+1));
mitesh2patel	0:e1a0471e5ffb	117	}
mitesh2patel	0:e1a0471e5ffb	118	/**
mitesh2patel	0:e1a0471e5ffb	119	* To reduce memory usage we sodify the URL directly
mitesh2patel	0:e1a0471e5ffb	120	* and replace '%20',',','+','=' with spaces.
mitesh2patel	0:e1a0471e5ffb	121	*/
mitesh2patel	0:e1a0471e5ffb	122	// mutable char _buf[1024];
mitesh2patel	0:e1a0471e5ffb	123	inline char clean(char str) const {
mitesh2patel	0:e1a0471e5ffb	124	char *in = str;
mitesh2patel	0:e1a0471e5ffb	125	// char *out = _buf;
mitesh2patel	0:e1a0471e5ffb	126	char *out = str; // this will do conversions in-place.
mitesh2patel	0:e1a0471e5ffb	127	bool inquotes=false;
mitesh2patel	0:e1a0471e5ffb	128	bool backslash=false;
mitesh2patel	0:e1a0471e5ffb	129	bool hasquery=false;
mitesh2patel	0:e1a0471e5ffb	130	bool cantquery=false;
mitesh2patel	0:e1a0471e5ffb	131	// cantquery=true will indicate that the URI already has symbols
mitesh2patel	0:e1a0471e5ffb	132	// incompatible with query, so it disables checking for query.
mitesh2patel	0:e1a0471e5ffb	133	#if HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	134	bool infield=false;
mitesh2patel	0:e1a0471e5ffb	135	// bool rpcquery=false;
mitesh2patel	0:e1a0471e5ffb	136	char *field=out;
mitesh2patel	0:e1a0471e5ffb	137	#endif
mitesh2patel	0:e1a0471e5ffb	138
mitesh2patel	0:e1a0471e5ffb	139	printf("\r\nDEBUG HTTPRPC::clean() IN=:%s:\r\n",str);
mitesh2patel	0:e1a0471e5ffb	140	while (*in) {
mitesh2patel	0:e1a0471e5ffb	141	#if HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	142	// Check if URI has query part
mitesh2patel	0:e1a0471e5ffb	143	// in form "/rpc/obj/method?arg1=val1&arg2=val2&arg3=val3"
mitesh2patel	0:e1a0471e5ffb	144	if (!inquotes && !cantquery && !hasquery && *in == '?') {
mitesh2patel	0:e1a0471e5ffb	145	hasquery = true;
mitesh2patel	0:e1a0471e5ffb	146	*out = ' '; out++; // delimit base URI part
mitesh2patel	0:e1a0471e5ffb	147	infield = true; in++; field=in; continue;
mitesh2patel	0:e1a0471e5ffb	148	// New field started. Do nothing yet
mitesh2patel	0:e1a0471e5ffb	149	}
mitesh2patel	0:e1a0471e5ffb	150	// Check if URI with query part is delimited
mitesh2patel	0:e1a0471e5ffb	151	if (!inquotes && !infield && hasquery && *in == '&') {
mitesh2patel	0:e1a0471e5ffb	152	*out = ' '; out++; // delimit current arg
mitesh2patel	0:e1a0471e5ffb	153	infield = true; in++; field=in; continue;
mitesh2patel	0:e1a0471e5ffb	154	// New field started
mitesh2patel	0:e1a0471e5ffb	155	}
mitesh2patel	0:e1a0471e5ffb	156	if (infield) {
mitesh2patel	0:e1a0471e5ffb	157	// Process the query - skip till '='
mitesh2patel	0:e1a0471e5ffb	158	// Also check if it is in form "/rpc/obj/method?val1&val2&val3"
mitesh2patel	0:e1a0471e5ffb	159	if (!inquotes && *in == '&') {
mitesh2patel	0:e1a0471e5ffb	160	// modified query - catch up
mitesh2patel	0:e1a0471e5ffb	161	while (field<in) {
mitesh2patel	0:e1a0471e5ffb	162	out = field;
mitesh2patel	0:e1a0471e5ffb	163	if (field=='%' && is_hex((field+1)) && is_hex(*(field+2)) ) {
mitesh2patel	0:e1a0471e5ffb	164	*out = hex_byte(++field);
mitesh2patel	0:e1a0471e5ffb	165	field++; // field is incremented by 2 total
mitesh2patel	0:e1a0471e5ffb	166	}
mitesh2patel	0:e1a0471e5ffb	167	if (!backslash && *out == '"') { inquotes = !inquotes; }
mitesh2patel	0:e1a0471e5ffb	168	backslash = inquotes && !backslash && (*out == '\\');
mitesh2patel	0:e1a0471e5ffb	169
mitesh2patel	0:e1a0471e5ffb	170	out++;
mitesh2patel	0:e1a0471e5ffb	171	field++;
mitesh2patel	0:e1a0471e5ffb	172	}
mitesh2patel	0:e1a0471e5ffb	173
mitesh2patel	0:e1a0471e5ffb	174	*out = ' '; out++; // delimit current arg
mitesh2patel	0:e1a0471e5ffb	175	infield = true; in++; field=in; continue;
mitesh2patel	0:e1a0471e5ffb	176	// New field started
mitesh2patel	0:e1a0471e5ffb	177	} else
mitesh2patel	0:e1a0471e5ffb	178	if (!inquotes && *in == '=') {
mitesh2patel	0:e1a0471e5ffb	179	infield = false;
mitesh2patel	0:e1a0471e5ffb	180	*in = '\0'; // this will mark the field name
mitesh2patel	0:e1a0471e5ffb	181	printf(" - field: %s\r\n", field);
mitesh2patel	0:e1a0471e5ffb	182	// FIXME: here we have a field/arg name. Can we use it to reorder the arguments for the rpc?
mitesh2patel	0:e1a0471e5ffb	183
mitesh2patel	0:e1a0471e5ffb	184	} else {
mitesh2patel	0:e1a0471e5ffb	185	// Keep tracking quotes
mitesh2patel	0:e1a0471e5ffb	186	char tmp = *in;
mitesh2patel	0:e1a0471e5ffb	187	if (in=='%' && is_hex((in+1)) && is_hex(*(in+2)) ) {
mitesh2patel	0:e1a0471e5ffb	188	tmp = hex_byte(++in);
mitesh2patel	0:e1a0471e5ffb	189	in++; // in is incremented by 2 total
mitesh2patel	0:e1a0471e5ffb	190	}
mitesh2patel	0:e1a0471e5ffb	191	if (!backslash && tmp == '"') { inquotes = !inquotes; }
mitesh2patel	0:e1a0471e5ffb	192	backslash = inquotes && !backslash && (tmp == '\\');
mitesh2patel	0:e1a0471e5ffb	193	}
mitesh2patel	0:e1a0471e5ffb	194	} else
mitesh2patel	0:e1a0471e5ffb	195	#endif // HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	196	{
mitesh2patel	0:e1a0471e5ffb	197	// Keep processing the stream
mitesh2patel	0:e1a0471e5ffb	198	out = in;
mitesh2patel	0:e1a0471e5ffb	199
mitesh2patel	0:e1a0471e5ffb	200	if (in=='%' && is_hex((in+1)) && is_hex(*(in+2)) ) {
mitesh2patel	0:e1a0471e5ffb	201	*out = hex_byte(++in);
mitesh2patel	0:e1a0471e5ffb	202	in++; // in is incremented by 2 total
mitesh2patel	0:e1a0471e5ffb	203	cantquery = !hasquery; // any %-encoded before '?' means it can't be a query
mitesh2patel	0:e1a0471e5ffb	204	} else
mitesh2patel	0:e1a0471e5ffb	205	if (!inquotes && !hasquery && (in==',' \|\| in=='+' \|\| *in=='=')) {
mitesh2patel	0:e1a0471e5ffb	206	*out = ' ';
mitesh2patel	0:e1a0471e5ffb	207	// cantquery = !hasquery; // any non-query delimiter disallows URI query
mitesh2patel	0:e1a0471e5ffb	208	}
mitesh2patel	0:e1a0471e5ffb	209	if (!backslash && *out == '"') { inquotes = !inquotes; }
mitesh2patel	0:e1a0471e5ffb	210	backslash = inquotes && !backslash && (*out == '\\');
mitesh2patel	0:e1a0471e5ffb	211
mitesh2patel	0:e1a0471e5ffb	212	out++;
mitesh2patel	0:e1a0471e5ffb	213	}
mitesh2patel	0:e1a0471e5ffb	214
mitesh2patel	0:e1a0471e5ffb	215	in++;
mitesh2patel	0:e1a0471e5ffb	216	} // while
mitesh2patel	0:e1a0471e5ffb	217
mitesh2patel	0:e1a0471e5ffb	218	#if HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	219	if (infield) {
mitesh2patel	0:e1a0471e5ffb	220	// modified query last arg - catch up
mitesh2patel	0:e1a0471e5ffb	221	while (field < in) {
mitesh2patel	0:e1a0471e5ffb	222	out = field;
mitesh2patel	0:e1a0471e5ffb	223	if (field=='%' && is_hex((field+1)) && is_hex(*(field+2)) ) {
mitesh2patel	0:e1a0471e5ffb	224	*out = hex_byte(++field);
mitesh2patel	0:e1a0471e5ffb	225	field++; // field is incremented by 2 total
mitesh2patel	0:e1a0471e5ffb	226	}
mitesh2patel	0:e1a0471e5ffb	227	if (!backslash && *out == '"') { inquotes = !inquotes; }
mitesh2patel	0:e1a0471e5ffb	228	backslash = inquotes && !backslash && (*out == '\\');
mitesh2patel	0:e1a0471e5ffb	229
mitesh2patel	0:e1a0471e5ffb	230	out++;
mitesh2patel	0:e1a0471e5ffb	231	field++;
mitesh2patel	0:e1a0471e5ffb	232	}
mitesh2patel	0:e1a0471e5ffb	233	}
mitesh2patel	0:e1a0471e5ffb	234	#endif // HTTPRPC_USE_URI_FIELDS
mitesh2patel	0:e1a0471e5ffb	235
mitesh2patel	0:e1a0471e5ffb	236	hasquery = cantquery; // only removes compiler warning
mitesh2patel	0:e1a0471e5ffb	237	*out = '\0';
mitesh2patel	0:e1a0471e5ffb	238
mitesh2patel	0:e1a0471e5ffb	239	// out = _buf;
mitesh2patel	0:e1a0471e5ffb	240	out = str;
mitesh2patel	0:e1a0471e5ffb	241	printf("DEBUG HTTPRPC::clean() OUT=:%s:\r\n", out);
mitesh2patel	0:e1a0471e5ffb	242	return out;
mitesh2patel	0:e1a0471e5ffb	243	}
mitesh2patel	0:e1a0471e5ffb	244	};
mitesh2patel	0:e1a0471e5ffb	245	#endif
mitesh2patel	0:e1a0471e5ffb	246
mitesh2patel	0:e1a0471e5ffb	247	#endif

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	15 Dec 2010
Imports:	21
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	2

lwip/HTTPServer/HTTPRPC.h@0:e1a0471e5ffb, 2010-12-15 (annotated)

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