/src/suricata7/libhtp/htp/bstr.c

Source
/***************************************************************************
 * Copyright (c) 2009-2010 Open Information Security Foundation
 * Copyright (c) 2010-2013 Qualys, Inc.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.

 * - Neither the name of the Qualys, Inc. nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 ***************************************************************************/

/**
 * @file
 * @author Ivan Ristic <ivanr@webkreator.com>
 */

#include <ctype.h>

#include "bstr.h"

bstr *bstr_alloc(size_t len) {
    bstr *b = malloc(sizeof (bstr) + len);
    if (b == NULL) return NULL;

    b->len = 0;
    b->size = len;
    b->realptr = NULL;

    return b;
}

bstr *bstr_add(bstr *destination, const bstr *source) {
    return bstr_add_mem(destination, bstr_ptr(source), bstr_len(source));
}

bstr *bstr_add_c(bstr *bdestination, const char *csource) {
    return bstr_add_mem(bdestination, csource, strlen(csource));
}

bstr *bstr_add_c_noex(bstr *destination, const char *source) {
    return bstr_add_mem_noex(destination, source, strlen(source));
}

bstr *bstr_add_mem(bstr *destination, const void *data, size_t len) {
    // Expand the destination if necessary
    if (bstr_size(destination) < bstr_len(destination) + len) {
        destination = bstr_expand(destination, bstr_len(destination) + len);
        if (destination == NULL) return NULL;
    }

    // Add source to destination
    bstr *b = (bstr *) destination;
    memcpy(bstr_ptr(destination) + bstr_len(b), data, len);
    bstr_adjust_len(b, bstr_len(b) + len);

    return destination;
}

bstr *bstr_add_mem_noex(bstr *destination, const void *data, size_t len) {
    size_t copylen = len;

    // Is there enough room in the destination?
    if (bstr_size(destination) < bstr_len(destination) + copylen) {
        copylen = bstr_size(destination) - bstr_len(destination);
        if (copylen <= 0) return destination;
    }

    // Copy over the bytes
    bstr *b = (bstr *) destination;
    memcpy(bstr_ptr(destination) + bstr_len(b), data, copylen);
    bstr_adjust_len(b, bstr_len(b) + copylen);

    return destination;
}

bstr *bstr_add_noex(bstr *destination, const bstr *source) {
    return bstr_add_mem_noex(destination, bstr_ptr(source), bstr_len(source));
}

void bstr_adjust_len(bstr *b, size_t newlen) {
    b->len = newlen;
}

void bstr_adjust_realptr(bstr *b, void *newrealptr) {
    b->realptr = newrealptr;
}

void bstr_adjust_size(bstr *b, size_t newsize) {
    b->size = newsize;
}

int bstr_begins_with(const bstr *haystack, const bstr *needle) {
    return bstr_begins_with_mem(haystack, bstr_ptr(needle), bstr_len(needle));
}

int bstr_begins_with_c(const bstr *haystack, const char *needle) {
    return bstr_begins_with_mem(haystack, needle, strlen(needle));
}

int bstr_begins_with_c_nocase(const bstr *haystack, const char *needle) {
    return bstr_begins_with_mem_nocase(haystack, needle, strlen(needle));
}

int bstr_begins_with_nocase(const bstr *haystack, const bstr *needle) {
    return bstr_begins_with_mem_nocase(haystack, bstr_ptr(needle), bstr_len(needle));
}

int bstr_begins_with_mem(const bstr *haystack, const void *_data, size_t len) {
    const unsigned char *data = (unsigned char *) _data;
    const unsigned char *hdata = bstr_ptr(haystack);
    size_t hlen = bstr_len(haystack);
    size_t pos = 0;

    while ((pos < len) && (pos < hlen)) {
        if (hdata[pos] != data[pos]) {
            return 0;
        }

        pos++;
    }

    if (pos == len) {
        return 1;
    } else {
        return 0;
    }
}

int bstr_begins_with_mem_nocase(const bstr *haystack, const void *_data, size_t len) {
    const unsigned char *data = (const unsigned char *) _data;
    const unsigned char *hdata = bstr_ptr(haystack);
    size_t hlen = bstr_len(haystack);
    size_t pos = 0;

    while ((pos < len) && (pos < hlen)) {
        if (tolower((int) hdata[pos]) != tolower((int) data[pos])) {
            return 0;
        }

        pos++;
    }

    if (pos == len) {
        return 1;
    } else {
        return 0;
    }
}

int bstr_char_at(const bstr *b, size_t pos) {
    unsigned char *data = bstr_ptr(b);
    size_t len = bstr_len(b);

    if (pos >= len) return -1;
    return data[pos];
}

int bstr_char_at_end(const bstr *b, size_t pos) {
    unsigned char *data = bstr_ptr(b);
    size_t len = bstr_len(b);

    if (pos >= len) return -1;
    return data[len - 1 - pos];
}

void bstr_chop(bstr *b) {
    if (bstr_len(b) > 0) {
        bstr_adjust_len(b, bstr_len(b) - 1);
    }
}

int bstr_chr(const bstr *b, int c) {
    unsigned char *data = bstr_ptr(b);
    size_t len = bstr_len(b);

    size_t i = 0;
    while (i < len) {
        if (data[i] == c) {
            return (int) i;
        }

        i++;
    }

    return -1;
}

int bstr_cmp(const bstr *b1, const bstr *b2) {
    return bstr_util_cmp_mem(bstr_ptr(b1), bstr_len(b1), bstr_ptr(b2), bstr_len(b2));
}

int bstr_cmp_c(const bstr *b, const char *c) {
    return bstr_util_cmp_mem(bstr_ptr(b), bstr_len(b), c, strlen(c));
}

int bstr_cmp_c_nocase(const bstr *b, const char *c) {
    return bstr_util_cmp_mem_nocase(bstr_ptr(b), bstr_len(b), c, strlen(c));
}

int bstr_cmp_c_nocasenorzero(const bstr *b, const char *c) {
    return bstr_util_cmp_mem_nocasenorzero(bstr_ptr(b), bstr_len(b), c, strlen(c));
}

int bstr_cmp_mem(const bstr *b, const void *data, size_t len) {
    return bstr_util_cmp_mem(bstr_ptr(b), bstr_len(b), data, len);
}

int bstr_cmp_mem_nocase(const bstr *b, const void *data, size_t len) {
    return bstr_util_cmp_mem_nocase(bstr_ptr(b), bstr_len(b), data, len);
}

int bstr_cmp_nocase(const bstr *b1, const bstr *b2) {
    return bstr_util_cmp_mem_nocase(bstr_ptr(b1), bstr_len(b1), bstr_ptr(b2), bstr_len(b2));
}

bstr *bstr_dup(const bstr *b) {
    return bstr_dup_ex(b, 0, bstr_len(b));
}

bstr *bstr_dup_c(const char *cstr) {
    return bstr_dup_mem(cstr, strlen(cstr));
}

bstr *bstr_dup_ex(const bstr *b, size_t offset, size_t len) {
    bstr *bnew = bstr_alloc(len);
    if (bnew == NULL) return NULL;
    memcpy(bstr_ptr(bnew), bstr_ptr(b) + offset, len);
    bstr_adjust_len(bnew, len);
    return bnew;
}

bstr *bstr_dup_lower(const bstr *b) {
    return bstr_to_lowercase(bstr_dup(b));
}

bstr *bstr_dup_mem(const void *data, size_t len) {
    bstr *bnew = bstr_alloc(len);
    if (bnew == NULL) return NULL;
    memcpy(bstr_ptr(bnew), data, len);
    bstr_adjust_len(bnew, len);
    return bnew;
}

bstr *bstr_expand(bstr *b, size_t newsize) {
    if (bstr_realptr(b) != NULL) {
        // Refuse to expand a wrapped bstring. In the future,
        // we can change this to make a copy of the data, thus
        // leaving the original memory area intact.
        return NULL;
    }

    // Catch attempts to "expand" to a smaller size
    if (bstr_size(b) > newsize) return NULL;

    bstr *bnew = realloc(b, sizeof (bstr) + newsize);
    if (bnew == NULL) return NULL;

    bstr_adjust_size(bnew, newsize);

    return bnew;
}

void bstr_free(bstr *b) {
    if (b == NULL) return;
    free(b);
}

int bstr_index_of(const bstr *haystack, const bstr *needle) {
    return bstr_index_of_mem(haystack, bstr_ptr(needle), bstr_len(needle));
}

int bstr_index_of_c(const bstr *haystack, const char *needle) {
    return bstr_index_of_mem(haystack, needle, strlen(needle));
}

int bstr_index_of_c_nocase(const bstr *haystack, const char *needle) {
    return bstr_index_of_mem_nocase(haystack, needle, strlen(needle));
}

int bstr_index_of_c_nocasenorzero(const bstr *haystack, const char *needle) {
    return bstr_util_mem_index_of_mem_nocasenorzero(bstr_ptr(haystack), bstr_len(haystack), needle, strlen(needle));
}

int bstr_index_of_mem(const bstr *haystack, const void *_data2, size_t len2) {
    return bstr_util_mem_index_of_mem(bstr_ptr(haystack), bstr_len(haystack), _data2, len2);
}

int bstr_index_of_mem_nocase(const bstr *haystack, const void *_data2, size_t len2) {
    return bstr_util_mem_index_of_mem_nocase(bstr_ptr(haystack), bstr_len(haystack), _data2, len2);
}

int bstr_index_of_nocase(const bstr *haystack, const bstr *needle) {
    return bstr_index_of_mem_nocase(haystack, bstr_ptr(needle), bstr_len(needle));
}

int bstr_rchr(const bstr *b, int c) {
    const unsigned char *data = bstr_ptr(b);
    size_t len = bstr_len(b);

    size_t i = len;
    while (i > 0) {
        if (data[i - 1] == c) {
            return (int) (i - 1);
        }

        i--;
    }

    return -1;
}

bstr *bstr_to_lowercase(bstr *b) {
    if (b == NULL) return NULL;

    unsigned char *data = bstr_ptr(b);
    size_t len = bstr_len(b);

    size_t i = 0;
    while (i < len) {
        data[i] = (uint8_t)tolower(data[i]);
        i++;
    }

    return b;
}

int bstr_util_cmp_mem(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (const unsigned char *) _data1;
    const unsigned char *data2 = (const unsigned char *) _data2;
    size_t p1 = 0, p2 = 0;

    while ((p1 < len1) && (p2 < len2)) {
        if (data1[p1] != data2[p2]) {
            // Difference.
            return (data1[p1] < data2[p2]) ? -1 : 1;
        }

        p1++;
        p2++;
    }

    if ((p1 == len2) && (p2 == len1)) {
        // They're identical.
        return 0;
    } else {
        // One string is shorter.
        if (p1 == len1) return -1;
        else return 1;
    }
}

int bstr_util_cmp_mem_nocase(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (const unsigned char *) _data1;
    const unsigned char *data2 = (const unsigned char *) _data2;
    size_t p1 = 0, p2 = 0;

    while ((p1 < len1) && (p2 < len2)) {
        if (tolower(data1[p1]) != tolower(data2[p2])) {
            // Difference.
            return (tolower(data1[p1]) < tolower(data2[p2])) ? -1 : 1;
        }

        p1++;
        p2++;
    }

    if ((p1 == len2) && (p2 == len1)) {
        // They're identical.
        return 0;
    } else {
        // One string is shorter.
        if (p1 == len1) return -1;
        else return 1;
    }
}

int bstr_util_cmp_mem_nocasenorzero(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (const unsigned char *) _data1;
    const unsigned char *data2 = (const unsigned char *) _data2;
    size_t p1 = 0, p2 = 0;

    while ((p1 < len1) && (p2 < len2)) {
        if (data1[p1] == 0) {
            p1++;
            continue;
        }
        if (tolower(data1[p1]) != tolower(data2[p2])) {
            // Difference.
            return (tolower(data1[p1]) < tolower(data2[p2])) ? -1 : 1;
        }

        p1++;
        p2++;
    }

    while((p1 < len1) && (data1[p1] == 0)) {
        p1++;
    }
    if ((p1 == len1) && (p2 == len2)) {
        // They're identical.
        return 0;
    } else {
        // One string is shorter.
        if (p1 == len1) return -1;
        else return 1;
    }
}

int64_t bstr_util_mem_to_pint(const void *_data, size_t len, int base, size_t *lastlen) {
    const unsigned char *data = (unsigned char *) _data;
    int64_t rval = 0, tflag = 0;
    size_t i = 0;

    *lastlen = i;

    for (i = 0; i < len; i++) {
        int d = data[i];

        *lastlen = i;

        // Convert character to digit.
        if ((d >= '0') && (d <= '9')) {
            d -= '0';
        } else if ((d >= 'a') && (d <= 'z')) {
            d -= 'a' - 10;
        } else if ((d >= 'A') && (d <= 'Z')) {
            d -= 'A' - 10;
        } else {
            d = -1;
        }

        // Check that the digit makes sense with the base we are using.
        if ((d == -1) || (d >= base)) {
            if (tflag) {
                // Return what we have so far; lastlen points
                // to the first non-digit position.
                return rval;
            } else {
                // We didn't see a single digit.
                return -1;
            }
        }

        if (tflag) {
            if (((INT64_MAX - d) / base) < rval) {
                // Overflow
                return -2;
            }

            rval *= base;
            rval += d;
        } else {
            rval = d;
            tflag = 1;
        }
    }

    *lastlen = i + 1;

    return rval;
}

int bstr_util_mem_index_of_c(const void *_data1, size_t len1, const char *cstr) {
    return bstr_util_mem_index_of_mem(_data1, len1, cstr, strlen(cstr));
}

int bstr_util_mem_index_of_c_nocase(const void *_data1, size_t len1, const char *cstr) {
    return bstr_util_mem_index_of_mem_nocase(_data1, len1, cstr, strlen(cstr));
}

int bstr_util_mem_index_of_mem(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (unsigned char *) _data1;
    const unsigned char *data2 = (unsigned char *) _data2;
    size_t i, j;

    // If we ever want to optimize this function, the following link
    // might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm

    for (i = 0; i < len1; i++) {
        size_t k = i;

        for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
            if (data1[k] != data2[j]) break;
        }

        if (j == len2) {
            return (int) i;
        }
    }

    return -1;
}

int bstr_util_mem_index_of_mem_nocase(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (unsigned char *) _data1;
    const unsigned char *data2 = (unsigned char *) _data2;
    size_t i, j;

    // If we ever want to optimize this function, the following link
    // might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm

    for (i = 0; i < len1; i++) {
        size_t k = i;

        for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
            if (toupper(data1[k]) != toupper(data2[j])) break;
        }

        if (j == len2) {
            return (int) i;
        }
    }

    return -1;
}

int bstr_util_mem_index_of_mem_nocasenorzero(const void *_data1, size_t len1, const void *_data2, size_t len2) {
    const unsigned char *data1 = (unsigned char *) _data1;
    const unsigned char *data2 = (unsigned char *) _data2;
    size_t i, j;

    // If we ever want to optimize this function, the following link
    // might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm

    for (i = 0; i < len1; i++) {
        size_t k = i;
        if (data1[i] == 0) {
            // skip leading zeroes to avoid quadratic complexity
            continue;
        }

        for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
            if (data1[k] == 0) {
                j--;
                continue;
            }
            if (toupper(data1[k]) != toupper(data2[j])) break;
        }

        if (j == len2) {
            return (int) i;
        }
    }

    return -1;
}

void bstr_util_mem_trim(unsigned char **data, size_t *len) {
    if ((data == NULL)||(len == NULL)) return;

    unsigned char *d = *data;
    size_t l = *len;

    // Ignore whitespace at the beginning.
    size_t pos = 0;
    while ((pos < l) && isspace(d[pos])) pos++;
    d += pos;
    l -= pos;

    // Ignore whitespace at the end.
    while ((l > 0)&&(isspace(d[l - 1]))) l--;

    *data = d;
    *len = l;
}

char *bstr_util_memdup_to_c(const void *_data, size_t len) {
    const unsigned char *data = (unsigned char *) _data;

    // Count how many NUL bytes we have in the string.
    size_t i, nulls = 0;
    for (i = 0; i < len; i++) {
        if (data[i] == '\0') {
            nulls++;
        }
    }

    // Now copy the string into a NUL-terminated buffer.

    char *r, *d;
    r = d = malloc(len + nulls + 1);
    if (d == NULL) return NULL;

    while (len--) {
        if (*data == '\0') {
            data++;
            *d++ = '\\';
            *d++ = '0';
        } else {
            *d++ = *data++;
        }
    }

    *d = '\0';

    return r;
}

char *bstr_util_strdup_to_c(const bstr *b) {
    if (b == NULL) return NULL;
    return bstr_util_memdup_to_c(bstr_ptr(b), bstr_len(b));
}

bstr *bstr_wrap_c(const char *cstr) {
    return bstr_wrap_mem((unsigned char *) cstr, strlen(cstr));
}

bstr *bstr_wrap_mem(const void *data, size_t len) {
    bstr *b = (bstr *) malloc(sizeof (bstr));
    if (b == NULL) return NULL;

    b->size = b->len = len;
    b->realptr = (unsigned char *) data;

    return b;
}

Coverage Report

Created: 2026-02-14 06:42

Line	Count	Source
1		/***************************************************************************
2		* Copyright (c) 2009-2010 Open Information Security Foundation
3		* Copyright (c) 2010-2013 Qualys, Inc.
4		* All rights reserved.
5		*
6		* Redistribution and use in source and binary forms, with or without
7		* modification, are permitted provided that the following conditions are
8		* met:
9		*
10		* - Redistributions of source code must retain the above copyright
11		* notice, this list of conditions and the following disclaimer.
12
13		* - Redistributions in binary form must reproduce the above copyright
14		* notice, this list of conditions and the following disclaimer in the
15		* documentation and/or other materials provided with the distribution.
16
17		* - Neither the name of the Qualys, Inc. nor the names of its
18		* contributors may be used to endorse or promote products derived from
19		* this software without specific prior written permission.
20		*
21		* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22		* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23		* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24		* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25		* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28		* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29		* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30		* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31		* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32		***************************************************************************/
33
34		/**
35		* @file
36		* @author Ivan Ristic <ivanr@webkreator.com>
37		*/
38
39		#include <ctype.h>
40
41		#include "bstr.h"
42
43	4.79M	bstr *bstr_alloc(size_t len) {
44	4.79M	bstr *b = malloc(sizeof (bstr) + len);
45	4.79M	if (b == NULL) return NULL;
46
47	4.79M	b->len = 0;
48	4.79M	b->size = len;
49	4.79M	b->realptr = NULL;
50
51	4.79M	return b;
52	4.79M	}
53
54	0	bstr bstr_add(bstr destination, const bstr *source) {
55	0	return bstr_add_mem(destination, bstr_ptr(source), bstr_len(source));
56	0	}
57
58	0	bstr bstr_add_c(bstr bdestination, const char *csource) {
59	0	return bstr_add_mem(bdestination, csource, strlen(csource));
60	0	}
61
62	14.7k	bstr bstr_add_c_noex(bstr destination, const char *source) {
63	14.7k	return bstr_add_mem_noex(destination, source, strlen(source));
64	14.7k	}
65
66	280k	bstr bstr_add_mem(bstr destination, const void *data, size_t len) {
67		// Expand the destination if necessary
68	280k	if (bstr_size(destination) < bstr_len(destination) + len) {
69	270k	destination = bstr_expand(destination, bstr_len(destination) + len);
70	270k	if (destination == NULL) return NULL;
71	270k	}
72
73		// Add source to destination
74	280k	bstr b = (bstr ) destination;
75	280k	memcpy(bstr_ptr(destination) + bstr_len(b), data, len);
76	280k	bstr_adjust_len(b, bstr_len(b) + len);
77
78	280k	return destination;
79	280k	}
80
81	759k	bstr bstr_add_mem_noex(bstr destination, const void *data, size_t len) {
82	759k	size_t copylen = len;
83
84		// Is there enough room in the destination?
85	759k	if (bstr_size(destination) < bstr_len(destination) + copylen) {
86	0	copylen = bstr_size(destination) - bstr_len(destination);
87	0	if (copylen <= 0) return destination;
88	0	}
89
90		// Copy over the bytes
91	759k	bstr b = (bstr ) destination;
92	759k	memcpy(bstr_ptr(destination) + bstr_len(b), data, copylen);
93	759k	bstr_adjust_len(b, bstr_len(b) + copylen);
94
95	759k	return destination;
96	759k	}
97
98	436k	bstr bstr_add_noex(bstr destination, const bstr *source) {
99	436k	return bstr_add_mem_noex(destination, bstr_ptr(source), bstr_len(source));
100	436k	}
101
102	5.94M	void bstr_adjust_len(bstr *b, size_t newlen) {
103	5.94M	b->len = newlen;
104	5.94M	}
105
106	0	void bstr_adjust_realptr(bstr b, void newrealptr) {
107	0	b->realptr = newrealptr;
108	0	}
109
110	579k	void bstr_adjust_size(bstr *b, size_t newsize) {
111	579k	b->size = newsize;
112	579k	}
113
114	0	int bstr_begins_with(const bstr haystack, const bstr needle) {
115	0	return bstr_begins_with_mem(haystack, bstr_ptr(needle), bstr_len(needle));
116	0	}
117
118	0	int bstr_begins_with_c(const bstr haystack, const char needle) {
119	0	return bstr_begins_with_mem(haystack, needle, strlen(needle));
120	0	}
121
122	3.97k	int bstr_begins_with_c_nocase(const bstr haystack, const char needle) {
123	3.97k	return bstr_begins_with_mem_nocase(haystack, needle, strlen(needle));
124	3.97k	}
125
126	0	int bstr_begins_with_nocase(const bstr haystack, const bstr needle) {
127	0	return bstr_begins_with_mem_nocase(haystack, bstr_ptr(needle), bstr_len(needle));
128	0	}
129
130	0	int bstr_begins_with_mem(const bstr haystack, const void _data, size_t len) {
131	0	const unsigned char data = (unsigned char ) _data;
132	0	const unsigned char *hdata = bstr_ptr(haystack);
133	0	size_t hlen = bstr_len(haystack);
134	0	size_t pos = 0;
135
136	0	while ((pos < len) && (pos < hlen)) {
137	0	if (hdata[pos] != data[pos]) {
138	0	return 0;
139	0	}
140
141	0	pos++;
142	0	}
143
144	0	if (pos == len) {
145	0	return 1;
146	0	} else {
147	0	return 0;
148	0	}
149	0	}
150
151	3.97k	int bstr_begins_with_mem_nocase(const bstr haystack, const void _data, size_t len) {
152	3.97k	const unsigned char data = (const unsigned char ) _data;
153	3.97k	const unsigned char *hdata = bstr_ptr(haystack);
154	3.97k	size_t hlen = bstr_len(haystack);
155	3.97k	size_t pos = 0;
156
157	22.0k	while ((pos < len) && (pos < hlen)) {
158	18.5k	if (tolower((int) hdata[pos]) != tolower((int) data[pos])) {
159	461	return 0;
160	461	}
161
162	18.0k	pos++;
163	18.0k	}
164
165	3.51k	if (pos == len) {
166	3.51k	return 1;
167	3.51k	} else {
168	0	return 0;
169	0	}
170	3.51k	}
171
172	0	int bstr_char_at(const bstr *b, size_t pos) {
173	0	unsigned char *data = bstr_ptr(b);
174	0	size_t len = bstr_len(b);
175
176	0	if (pos >= len) return -1;
177	0	return data[pos];
178	0	}
179
180	25.4k	int bstr_char_at_end(const bstr *b, size_t pos) {
181	25.4k	unsigned char *data = bstr_ptr(b);
182	25.4k	size_t len = bstr_len(b);
183
184	25.4k	if (pos >= len) return -1;
185	22.6k	return data[len - 1 - pos];
186	25.4k	}
187
188	1.49k	void bstr_chop(bstr *b) {
189	1.49k	if (bstr_len(b) > 0) {
190	1.49k	bstr_adjust_len(b, bstr_len(b) - 1);
191	1.49k	}
192	1.49k	}
193
194	10.1k	int bstr_chr(const bstr *b, int c) {
195	10.1k	unsigned char *data = bstr_ptr(b);
196	10.1k	size_t len = bstr_len(b);
197
198	10.1k	size_t i = 0;
199	1.97M	while (i < len) {
200	1.96M	if (data[i] == c) {
201	5.89k	return (int) i;
202	5.89k	}
203
204	1.96M	i++;
205	1.96M	}
206
207	4.24k	return -1;
208	10.1k	}
209
210	0	int bstr_cmp(const bstr b1, const bstr b2) {
211	0	return bstr_util_cmp_mem(bstr_ptr(b1), bstr_len(b1), bstr_ptr(b2), bstr_len(b2));
212	0	}
213
214	19.2M	int bstr_cmp_c(const bstr b, const char c) {
215	19.2M	return bstr_util_cmp_mem(bstr_ptr(b), bstr_len(b), c, strlen(c));
216	19.2M	}
217
218	356k	int bstr_cmp_c_nocase(const bstr b, const char c) {
219	356k	return bstr_util_cmp_mem_nocase(bstr_ptr(b), bstr_len(b), c, strlen(c));
220	356k	}
221
222	4.93M	int bstr_cmp_c_nocasenorzero(const bstr b, const char c) {
223	4.93M	return bstr_util_cmp_mem_nocasenorzero(bstr_ptr(b), bstr_len(b), c, strlen(c));
224	4.93M	}
225
226	0	int bstr_cmp_mem(const bstr b, const void data, size_t len) {
227	0	return bstr_util_cmp_mem(bstr_ptr(b), bstr_len(b), data, len);
228	0	}
229
230	0	int bstr_cmp_mem_nocase(const bstr b, const void data, size_t len) {
231	0	return bstr_util_cmp_mem_nocase(bstr_ptr(b), bstr_len(b), data, len);
232	0	}
233
234	2.43M	int bstr_cmp_nocase(const bstr b1, const bstr b2) {
235	2.43M	return bstr_util_cmp_mem_nocase(bstr_ptr(b1), bstr_len(b1), bstr_ptr(b2), bstr_len(b2));
236	2.43M	}
237
238	696k	bstr bstr_dup(const bstr b) {
239	696k	return bstr_dup_ex(b, 0, bstr_len(b));
240	696k	}
241
242	389k	bstr bstr_dup_c(const char cstr) {
243	389k	return bstr_dup_mem(cstr, strlen(cstr));
244	389k	}
245
246	706k	bstr bstr_dup_ex(const bstr b, size_t offset, size_t len) {
247	706k	bstr *bnew = bstr_alloc(len);
248	706k	if (bnew == NULL) return NULL;
249	706k	memcpy(bstr_ptr(bnew), bstr_ptr(b) + offset, len);
250	706k	bstr_adjust_len(bnew, len);
251	706k	return bnew;
252	706k	}
253
254	45.2k	bstr bstr_dup_lower(const bstr b) {
255	45.2k	return bstr_to_lowercase(bstr_dup(b));
256	45.2k	}
257
258	3.91M	bstr bstr_dup_mem(const void data, size_t len) {
259	3.91M	bstr *bnew = bstr_alloc(len);
260	3.91M	if (bnew == NULL) return NULL;
261	3.91M	memcpy(bstr_ptr(bnew), data, len);
262	3.91M	bstr_adjust_len(bnew, len);
263	3.91M	return bnew;
264	3.91M	}
265
266	579k	bstr bstr_expand(bstr b, size_t newsize) {
267	579k	if (bstr_realptr(b) != NULL) {
268		// Refuse to expand a wrapped bstring. In the future,
269		// we can change this to make a copy of the data, thus
270		// leaving the original memory area intact.
271	0	return NULL;
272	0	}
273
274		// Catch attempts to "expand" to a smaller size
275	579k	if (bstr_size(b) > newsize) return NULL;
276
277	579k	bstr *bnew = realloc(b, sizeof (bstr) + newsize);
278	579k	if (bnew == NULL) return NULL;
279
280	579k	bstr_adjust_size(bnew, newsize);
281
282	579k	return bnew;
283	579k	}
284
285	10.1M	void bstr_free(bstr *b) {
286	10.1M	if (b == NULL) return;
287	4.79M	free(b);
288	4.79M	}
289
290	0	int bstr_index_of(const bstr haystack, const bstr needle) {
291	0	return bstr_index_of_mem(haystack, bstr_ptr(needle), bstr_len(needle));
292	0	}
293
294	3.39k	int bstr_index_of_c(const bstr haystack, const char needle) {
295	3.39k	return bstr_index_of_mem(haystack, needle, strlen(needle));
296	3.39k	}
297
298	390	int bstr_index_of_c_nocase(const bstr haystack, const char needle) {
299	390	return bstr_index_of_mem_nocase(haystack, needle, strlen(needle));
300	390	}
301
302	8.87k	int bstr_index_of_c_nocasenorzero(const bstr haystack, const char needle) {
303	8.87k	return bstr_util_mem_index_of_mem_nocasenorzero(bstr_ptr(haystack), bstr_len(haystack), needle, strlen(needle));
304	8.87k	}
305
306	3.39k	int bstr_index_of_mem(const bstr haystack, const void _data2, size_t len2) {
307	3.39k	return bstr_util_mem_index_of_mem(bstr_ptr(haystack), bstr_len(haystack), _data2, len2);
308	3.39k	}
309
310	390	int bstr_index_of_mem_nocase(const bstr haystack, const void _data2, size_t len2) {
311	390	return bstr_util_mem_index_of_mem_nocase(bstr_ptr(haystack), bstr_len(haystack), _data2, len2);
312	390	}
313
314	0	int bstr_index_of_nocase(const bstr haystack, const bstr needle) {
315	0	return bstr_index_of_mem_nocase(haystack, bstr_ptr(needle), bstr_len(needle));
316	0	}
317
318	0	int bstr_rchr(const bstr *b, int c) {
319	0	const unsigned char *data = bstr_ptr(b);
320	0	size_t len = bstr_len(b);
321
322	0	size_t i = len;
323	0	while (i > 0) {
324	0	if (data[i - 1] == c) {
325	0	return (int) (i - 1);
326	0	}
327
328	0	i--;
329	0	}
330
331	0	return -1;
332	0	}
333
334	93.2k	bstr bstr_to_lowercase(bstr b) {
335	93.2k	if (b == NULL) return NULL;
336
337	93.2k	unsigned char *data = bstr_ptr(b);
338	93.2k	size_t len = bstr_len(b);
339
340	93.2k	size_t i = 0;
341	3.70M	while (i < len) {
342	3.61M	data[i] = (uint8_t)tolower(data[i]);
343	3.61M	i++;
344	3.61M	}
345
346	93.2k	return b;
347	93.2k	}
348
349	19.3M	int bstr_util_cmp_mem(const void _data1, size_t len1, const void _data2, size_t len2) {
350	19.3M	const unsigned char data1 = (const unsigned char ) _data1;
351	19.3M	const unsigned char data2 = (const unsigned char ) _data2;
352	19.3M	size_t p1 = 0, p2 = 0;
353
354	19.9M	while ((p1 < len1) && (p2 < len2)) {
355	19.5M	if (data1[p1] != data2[p2]) {
356		// Difference.
357	19.0M	return (data1[p1] < data2[p2]) ? -1 : 1;
358	19.0M	}
359
360	582k	p1++;
361	582k	p2++;
362	582k	}
363
364	333k	if ((p1 == len2) && (p2 == len1)) {
365		// They're identical.
366	61.4k	return 0;
367	271k	} else {
368		// One string is shorter.
369	271k	if (p1 == len1) return -1;
370	1.94k	else return 1;
371	271k	}
372	333k	}
373
374	2.79M	int bstr_util_cmp_mem_nocase(const void _data1, size_t len1, const void _data2, size_t len2) {
375	2.79M	const unsigned char data1 = (const unsigned char ) _data1;
376	2.79M	const unsigned char data2 = (const unsigned char ) _data2;
377	2.79M	size_t p1 = 0, p2 = 0;
378
379	7.46M	while ((p1 < len1) && (p2 < len2)) {
380	6.02M	if (tolower(data1[p1]) != tolower(data2[p2])) {
381		// Difference.
382	1.34M	return (tolower(data1[p1]) < tolower(data2[p2])) ? -1 : 1;
383	1.34M	}
384
385	4.67M	p1++;
386	4.67M	p2++;
387	4.67M	}
388
389	1.44M	if ((p1 == len2) && (p2 == len1)) {
390		// They're identical.
391	629k	return 0;
392	815k	} else {
393		// One string is shorter.
394	815k	if (p1 == len1) return -1;
395	320k	else return 1;
396	815k	}
397	1.44M	}
398
399	4.93M	int bstr_util_cmp_mem_nocasenorzero(const void _data1, size_t len1, const void _data2, size_t len2) {
400	4.93M	const unsigned char data1 = (const unsigned char ) _data1;
401	4.93M	const unsigned char data2 = (const unsigned char ) _data2;
402	4.93M	size_t p1 = 0, p2 = 0;
403
404	11.2M	while ((p1 < len1) && (p2 < len2)) {
405	10.0M	if (data1[p1] == 0) {
406	356k	p1++;
407	356k	continue;
408	356k	}
409	9.73M	if (tolower(data1[p1]) != tolower(data2[p2])) {
410		// Difference.
411	3.73M	return (tolower(data1[p1]) < tolower(data2[p2])) ? -1 : 1;
412	3.73M	}
413
414	5.99M	p1++;
415	5.99M	p2++;
416	5.99M	}
417
418	1.21M	while((p1 < len1) && (data1[p1] == 0)) {
419	20.2k	p1++;
420	20.2k	}
421	1.19M	if ((p1 == len1) && (p2 == len2)) {
422		// They're identical.
423	193k	return 0;
424	1.00M	} else {
425		// One string is shorter.
426	1.00M	if (p1 == len1) return -1;
427	3.95k	else return 1;
428	1.00M	}
429	1.19M	}
430
431	197k	int64_t bstr_util_mem_to_pint(const void _data, size_t len, int base, size_t lastlen) {
432	197k	const unsigned char data = (unsigned char ) _data;
433	197k	int64_t rval = 0, tflag = 0;
434	197k	size_t i = 0;
435
436	197k	*lastlen = i;
437
438	545k	for (i = 0; i < len; i++) {
439	379k	int d = data[i];
440
441	379k	*lastlen = i;
442
443		// Convert character to digit.
444	379k	if ((d >= '0') && (d <= '9')) {
445	334k	d -= '0';
446	334k	} else if ((d >= 'a') && (d <= 'z')) {
447	13.7k	d -= 'a' - 10;
448	31.5k	} else if ((d >= 'A') && (d <= 'Z')) {
449	10.0k	d -= 'A' - 10;
450	21.4k	} else {
451	21.4k	d = -1;
452	21.4k	}
453
454		// Check that the digit makes sense with the base we are using.
455	379k	if ((d == -1) \|\| (d >= base)) {
456	31.8k	if (tflag) {
457		// Return what we have so far; lastlen points
458		// to the first non-digit position.
459	15.7k	return rval;
460	16.0k	} else {
461		// We didn't see a single digit.
462	16.0k	return -1;
463	16.0k	}
464	31.8k	}
465
466	347k	if (tflag) {
467	166k	if (((INT64_MAX - d) / base) < rval) {
468		// Overflow
469	473	return -2;
470	473	}
471
472	165k	rval *= base;
473	165k	rval += d;
474	181k	} else {
475	181k	rval = d;
476	181k	tflag = 1;
477	181k	}
478	347k	}
479
480	165k	*lastlen = i + 1;
481
482	165k	return rval;
483	197k	}
484
485	0	int bstr_util_mem_index_of_c(const void _data1, size_t len1, const char cstr) {
486	0	return bstr_util_mem_index_of_mem(_data1, len1, cstr, strlen(cstr));
487	0	}
488
489	32.7k	int bstr_util_mem_index_of_c_nocase(const void _data1, size_t len1, const char cstr) {
490	32.7k	return bstr_util_mem_index_of_mem_nocase(_data1, len1, cstr, strlen(cstr));
491	32.7k	}
492
493	3.39k	int bstr_util_mem_index_of_mem(const void _data1, size_t len1, const void _data2, size_t len2) {
494	3.39k	const unsigned char data1 = (unsigned char ) _data1;
495	3.39k	const unsigned char data2 = (unsigned char ) _data2;
496	3.39k	size_t i, j;
497
498		// If we ever want to optimize this function, the following link
499		// might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
500
501	444k	for (i = 0; i < len1; i++) {
502	440k	size_t k = i;
503
504	442k	for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
505	442k	if (data1[k] != data2[j]) break;
506	442k	}
507
508	440k	if (j == len2) {
509	253	return (int) i;
510	253	}
511	440k	}
512
513	3.14k	return -1;
514	3.39k	}
515
516	33.1k	int bstr_util_mem_index_of_mem_nocase(const void _data1, size_t len1, const void _data2, size_t len2) {
517	33.1k	const unsigned char data1 = (unsigned char ) _data1;
518	33.1k	const unsigned char data2 = (unsigned char ) _data2;
519	33.1k	size_t i, j;
520
521		// If we ever want to optimize this function, the following link
522		// might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
523
524	612k	for (i = 0; i < len1; i++) {
525	589k	size_t k = i;
526
527	662k	for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
528	651k	if (toupper(data1[k]) != toupper(data2[j])) break;
529	651k	}
530
531	589k	if (j == len2) {
532	10.3k	return (int) i;
533	10.3k	}
534	589k	}
535
536	22.7k	return -1;
537	33.1k	}
538
539	8.87k	int bstr_util_mem_index_of_mem_nocasenorzero(const void _data1, size_t len1, const void _data2, size_t len2) {
540	8.87k	const unsigned char data1 = (unsigned char ) _data1;
541	8.87k	const unsigned char data2 = (unsigned char ) _data2;
542	8.87k	size_t i, j;
543
544		// If we ever want to optimize this function, the following link
545		// might be useful: http://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
546
547	153k	for (i = 0; i < len1; i++) {
548	153k	size_t k = i;
549	153k	if (data1[i] == 0) {
550		// skip leading zeroes to avoid quadratic complexity
551	21.8k	continue;
552	21.8k	}
553
554	210k	for (j = 0; ((j < len2) && (k < len1)); j++, k++) {
555	201k	if (data1[k] == 0) {
556	16.3k	j--;
557	16.3k	continue;
558	16.3k	}
559	185k	if (toupper(data1[k]) != toupper(data2[j])) break;
560	185k	}
561
562	131k	if (j == len2) {
563	8.58k	return (int) i;
564	8.58k	}
565	131k	}
566
567	290	return -1;
568	8.87k	}
569
570	28.9k	void bstr_util_mem_trim(unsigned char *data, size_t len) {
571	28.9k	if ((data == NULL)\|\|(len == NULL)) return;
572
573	28.9k	unsigned char d = data;
574	28.9k	size_t l = *len;
575
576		// Ignore whitespace at the beginning.
577	28.9k	size_t pos = 0;
578	30.0k	while ((pos < l) && isspace(d[pos])) pos++;
579	28.9k	d += pos;
580	28.9k	l -= pos;
581
582		// Ignore whitespace at the end.
583	29.7k	while ((l > 0)&&(isspace(d[l - 1]))) l--;
584
585	28.9k	*data = d;
586	28.9k	*len = l;
587	28.9k	}
588
589	0	char bstr_util_memdup_to_c(const void _data, size_t len) {
590	0	const unsigned char data = (unsigned char ) _data;
591
592		// Count how many NUL bytes we have in the string.
593	0	size_t i, nulls = 0;
594	0	for (i = 0; i < len; i++) {
595	0	if (data[i] == '\0') {
596	0	nulls++;
597	0	}
598	0	}
599
600		// Now copy the string into a NUL-terminated buffer.
601
602	0	char r, d;
603	0	r = d = malloc(len + nulls + 1);
604	0	if (d == NULL) return NULL;
605
606	0	while (len--) {
607	0	if (*data == '\0') {
608	0	data++;
609	0	*d++ = '\\';
610	0	*d++ = '0';
611	0	} else {
612	0	d++ = data++;
613	0	}
614	0	}
615
616	0	*d = '\0';
617
618	0	return r;
619	0	}
620
621	0	char bstr_util_strdup_to_c(const bstr b) {
622	0	if (b == NULL) return NULL;
623	0	return bstr_util_memdup_to_c(bstr_ptr(b), bstr_len(b));
624	0	}
625
626	0	bstr bstr_wrap_c(const char cstr) {
627	0	return bstr_wrap_mem((unsigned char *) cstr, strlen(cstr));
628	0	}
629
630	0	bstr bstr_wrap_mem(const void data, size_t len) {
631	0	bstr b = (bstr ) malloc(sizeof (bstr));
632	0	if (b == NULL) return NULL;
633
634	0	b->size = b->len = len;
635	0	b->realptr = (unsigned char *) data;
636
637	0	return b;
638	0	}