utils/http.c File Reference

#include <time.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/types.h>
#include <string.h>
#include "http/message.h"
#include "http/request.h"
#include "http/response.h"
#include "class.h"
#include "commons.h"

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Macros
#define	ALPHAVAL(x)    (tolower((x)) - 'a' + 0xa)
#define	DIGITVAL(x)    ((x) - '0')
#define	ALNUMVAL(x)    (isdigit((x))?DIGITVAL((x)):ALPHAVAL((x)))

Functions
size_t	rfc1123Gmt (char *buffer, size_t _nbuf, const time_t *t)
size_t	rfc1123GmtNow (char *buffer, size_t _nbuf)
size_t	urldecode (char *buffer, size_t nbuffer)
char	isHttpVersion (const char *str, size_t len)
HttpMessage	httpGetMessage (const char *part1, size_t len1, const char *part2, size_t len2, const char *part3, size_t len3)

Variables
static const char *	DAY_NAMES []
static const char *	MONTH_NAMES []

Detailed Description

Author

Georg Hopp

Copyright

Copyright © 2012 Georg Hopp

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file utils/http.c.

Macro Definition Documentation

#define ALNUMVAL

(

x

)

(isdigit((x))?DIGITVAL((x)):ALPHAVAL((x)))

Definition at line 39 of file utils/http.c.

Referenced by urldecode().

#define ALPHAVAL

(

x

)

(tolower((x)) - 'a' + 0xa)

Definition at line 37 of file utils/http.c.

#define DIGITVAL

(

x

)

((x) - '0')

Definition at line 38 of file utils/http.c.

Function Documentation

HttpMessage httpGetMessage	(	const char *	part1,
		size_t	len1,
		const char *	part2,
		size_t	len2,
		const char *	part3,
		size_t	len3
	)

Definition at line 127 of file utils/http.c.

References isHttpVersion().

Referenced by httpParserNewMessage().

{
    if (isHttpVersion(part1, len1)) {
        return new(HttpResponse,
                part1, len1,
                strtoul(part2, NULL, 10),
                part3, len3);
    }

    if (isHttpVersion(part3, len3)) {
        return new(HttpRequest,
                part1, len1,
                part2, len2,
                part3, len3);
    }

    return NULL;
}

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char isHttpVersion	(	const char *	str,
		size_t	len
	)

Definition at line 112 of file utils/http.c.

References FALSE, and TRUE.

Referenced by httpGetMessage(), and httpMessageHasValidVersion().

{
    if (NULL == str)
        return FALSE;

    if (8 > len)
        return FALSE;

    if (0 != memcmp("HTTP/", str, sizeof("HTTP/")-1))
        return FALSE;

    return TRUE;
}

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size_t rfc1123Gmt	(	char *	buffer,
		size_t	_nbuf,
		const time_t *	t
	)

Definition at line 53 of file utils/http.c.

References DAY_NAMES, and MONTH_NAMES.

Referenced by assetCtor(), httpResponseAsset(), and rfc1123GmtNow().

{
    struct tm * tmp = gmtime(t);
    size_t      nbuf;

    nbuf = strftime(buffer, _nbuf, "---, %d --- %Y %T GMT", tmp);
    memcpy(buffer, DAY_NAMES[tmp->tm_wday], 3);
    memcpy(buffer+8, MONTH_NAMES[tmp->tm_mon], 3);

    return nbuf;
}

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size_t rfc1123GmtNow	(	char *	buffer,
		size_t	_nbuf
	)

Definition at line 69 of file utils/http.c.

References rfc1123Gmt().

Referenced by httpWorkerAddCommonHeader().

{
    time_t t = time(NULL);

    return rfc1123Gmt(buffer, _nbuf, &t);
}

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size_t urldecode	(	char *	buffer,
		size_t	nbuffer
	)

Decode an url encoded string. This expects a valid url encoded string and it size as arguments, else the behaviour of this function is undefined. This function modifies the data in buffer. No copy is made. The reason for this is only performance.

Definition at line 84 of file utils/http.c.

References ALNUMVAL.

Referenced by httpParserPostVars().

{
    char * buf_ptr = buffer;
    char * res_ptr = buffer;

    for(; 0 < nbuffer; nbuffer--, buf_ptr++, res_ptr++) {
        switch(*buf_ptr) {
            case '%':
                *res_ptr = (ALNUMVAL(buf_ptr[1]) << 4) | ALNUMVAL(buf_ptr[2]);
                buf_ptr += 2;
                nbuffer -= 2;
                break;

            case '+':
                *buf_ptr = ' ';
                /* intended drop through */

            default:
                *res_ptr = *buf_ptr;
                break;
        }
    }
    *res_ptr = 0;

    return res_ptr - buffer;
}

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Variable Documentation

const char* DAY_NAMES[]

static

Initial value:

= {
    "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }

Definition at line 42 of file utils/http.c.

Referenced by rfc1123Gmt().

const char* MONTH_NAMES[]

static

Initial value:

= {
    "Jan", "Feb", "Mar", "Apr", "May", "Jun",
    "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }

Definition at line 44 of file utils/http.c.

Referenced by rfc1123Gmt().