<commit_before>/* Copyright (C) 2001-2004 <NAME> and <NAME>.
 *
 * 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 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.
 * 
 * Except as contained in this notice, the names of the authors or their
 * institutions shall not be used in advertising or otherwise to promote the
 * sale, use or other dealings in this Software without prior written
 * authorization from the authors.
 */

/* Utility functions implementable using only public APIs. */

#include <assert.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#ifdef DNETCONN
#include <netdnet/dnetdb.h>
#include <netdnet/dn.h>
#endif
#include <netdb.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "xcb.h"
#include "xcbext.h"
#include "xcbint.h"

static const int error_connection = 1;

int xcb_popcount(uint32_t mask)
{
    unsigned long y;
    y = (mask >> 1) & 033333333333;
    y = mask - y - ((y >> 1) & 033333333333);
    return ((y + (y >> 3)) & 030707070707) % 077;
}

int xcb_parse_display(const char *name, char **host, int *displayp, int *screenp)
{
    int len, display, screen;
    char *colon, *dot, *end;
    if(!name || !*name)
        name = getenv("DISPLAY");
    if(!name)
        return 0;
    colon = strrchr(name, ':');
    if(!colon)
        return 0;
    len = colon - name;
    ++colon;
    display = strtoul(colon, &dot, 10);
    if(dot == colon)
        return 0;
    if(*dot == '\0')
        screen = 0;
    else
    {
        if(*dot != '.')
            return 0;
        ++dot;
        screen = strtoul(dot, &end, 10);
        if(end == dot || *end != '\0')
            return 0;
    }
    /* At this point, the display string is fully parsed and valid, but
     * the caller's memory is untouched. */

    *host = malloc(len + 1);
    if(!*host)
        return 0;
    memcpy(*host, name, len);
    (*host)[len] = '\0';
    *displayp = display;
    if(screenp)
        *screenp = screen;
    return 1;
}

static int _xcb_open_tcp(char *host, const unsigned short port);
static int _xcb_open_unix(const char *file);
#ifdef DNETCONN
static int _xcb_open_decnet(const char *host, const unsigned short port);
#endif

static int _xcb_open(char *host, const int display)
{
    int fd;

    if(*host)
    {
#ifdef DNETCONN
        /* DECnet displays have two colons, so xcb_parse_display will have left
           one at the end.  However, an IPv6 address can end with *two* colons,
           so only treat this as a DECnet display if host ends with exactly one
           colon. */
        char *colon = strchr(host, ':');
        if(colon && *(colon+1) == '\0')
        {
            *colon = '\0';
            fd = _xcb_open_decnet(host, display);
        }
        else
#endif
        {
            /* display specifies TCP */
            unsigned short port = X_TCP_PORT + display;
            fd = _xcb_open_tcp(host, port);
        }
    }
    else
    {
        /* display specifies Unix socket */
        static const char base[] = "/tmp/.X11-unix/X";
        char file[sizeof(base) + 20];
        snprintf(file, sizeof(file), "%s%d", base, display);
        fd = _xcb_open_unix(file);
    }

    return fd;
}

#ifdef DNETCONN
static int _xcb_open_decnet(const char *host, const unsigned short port)
{
    int fd;
    struct sockaddr_dn addr;
    struct accessdata_dn accessdata;
    struct nodeent *nodeaddr = getnodebyname(host);

    if(!nodeaddr)
        return -1;
    addr.sdn_family = AF_DECnet;

    addr.sdn_add.a_len = nodeaddr->n_length;
    memcpy(addr.sdn_add.a_addr, nodeaddr->n_addr, addr.sdn_add.a_len);

    sprintf((char *)addr.sdn_objname, "X$X%d", port);
    addr.sdn_objnamel = strlen((char *)addr.sdn_objname);
    addr.sdn_objnum = 0;

    fd = socket(PF_DECnet, SOCK_STREAM, 0);
    if(fd == -1)
        return -1;

    memset(&accessdata, 0, sizeof(accessdata));
    sprintf((char*)accessdata.acc_acc, "%d", getuid());
    accessdata.acc_accl = strlen((char *)accessdata.acc_acc);
    setsockopt(fd, DNPROTO_NSP, SO_CONACCESS, &accessdata, sizeof(accessdata));

    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
        return -1;
    return fd;
}
#endif

static int _xcb_open_tcp(char *host, const unsigned short port)
{
    int fd = -1;
    struct addrinfo hints = { AI_ADDRCONFIG | AI_NUMERICSERV, AF_UNSPEC,
                              SOCK_STREAM };
    char service[6]; /* "65535" with the trailing '\0' */<commit_msg>Only use AI_NUMERICSERV if defined.<commit_after>/* Copyright (C) 2001-2004 <NAME> and <NAME>.
 *
 * 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 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.
 * 
 * Except as contained in this notice, the names of the authors or their
 * institutions shall not be used in advertising or otherwise to promote the
 * sale, use or other dealings in this Software without prior written
 * authorization from the authors.
 */

/* Utility functions implementable using only public APIs. */

#include <assert.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#ifdef DNETCONN
#include <netdnet/dnetdb.h>
#include <netdnet/dn.h>
#endif
#include <netdb.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

#include "xcb.h"
#include "xcbext.h"
#include "xcbint.h"

static const int error_connection = 1;

int xcb_popcount(uint32_t mask)
{
    unsigned long y;
    y = (mask >> 1) & 033333333333;
    y = mask - y - ((y >> 1) & 033333333333);
    return ((y + (y >> 3)) & 030707070707) % 077;
}

int xcb_parse_display(const char *name, char **host, int *displayp, int *screenp)
{
    int len, display, screen;
    char *colon, *dot, *end;
    if(!name || !*name)
        name = getenv("DISPLAY");
    if(!name)
        return 0;
    colon = strrchr(name, ':');
    if(!colon)
        return 0;
    len = colon - name;
    ++colon;
    display = strtoul(colon, &dot, 10);
    if(dot == colon)
        return 0;
    if(*dot == '\0')
        screen = 0;
    else
    {
        if(*dot != '.')
            return 0;
        ++dot;
        screen = strtoul(dot, &end, 10);
        if(end == dot || *end != '\0')
            return 0;
    }
    /* At this point, the display string is fully parsed and valid, but
     * the caller's memory is untouched. */

    *host = malloc(len + 1);
    if(!*host)
        return 0;
    memcpy(*host, name, len);
    (*host)[len] = '\0';
    *displayp = display;
    if(screenp)
        *screenp = screen;
    return 1;
}

static int _xcb_open_tcp(char *host, const unsigned short port);
static int _xcb_open_unix(const char *file);
#ifdef DNETCONN
static int _xcb_open_decnet(const char *host, const unsigned short port);
#endif

static int _xcb_open(char *host, const int display)
{
    int fd;

    if(*host)
    {
#ifdef DNETCONN
        /* DECnet displays have two colons, so xcb_parse_display will have left
           one at the end.  However, an IPv6 address can end with *two* colons,
           so only treat this as a DECnet display if host ends with exactly one
           colon. */
        char *colon = strchr(host, ':');
        if(colon && *(colon+1) == '\0')
        {
            *colon = '\0';
            fd = _xcb_open_decnet(host, display);
        }
        else
#endif
        {
            /* display specifies TCP */
            unsigned short port = X_TCP_PORT + display;
            fd = _xcb_open_tcp(host, port);
        }
    }
    else
    {
        /* display specifies Unix socket */
        static const char base[] = "/tmp/.X11-unix/X";
        char file[sizeof(base) + 20];
        snprintf(file, sizeof(file), "%s%d", base, display);
        fd = _xcb_open_unix(file);
    }

    return fd;
}

#ifdef DNETCONN
static int _xcb_open_decnet(const char *host, const unsigned short port)
{
    int fd;
    struct sockaddr_dn addr;
    struct accessdata_dn accessdata;
    struct nodeent *nodeaddr = getnodebyname(host);

    if(!nodeaddr)
        return -1;
    addr.sdn_family = AF_DECnet;

    addr.sdn_add.a_len = nodeaddr->n_length;
    memcpy(addr.sdn_add.a_addr, nodeaddr->n_addr, addr.sdn_add.a_len);

    sprintf((char *)addr.sdn_objname, "X$X%d", port);
    addr.sdn_objnamel = strlen((char *)addr.sdn_objname);
    addr.sdn_objnum = 0;

    fd = socket(PF_DECnet, SOCK_STREAM, 0);
    if(fd == -1)
        return -1;

    memset(&accessdata, 0, sizeof(accessdata));
    sprintf((char*)accessdata.acc_acc, "%d", getuid());
    accessdata.acc_accl = strlen((char *)accessdata.acc_acc);
    setsockopt(fd, DNPROTO_NSP, SO_CONACCESS, &accessdata, sizeof(accessdata));

    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
        return -1;
    return fd;
}
#endif

static int _xcb_open_tcp(char *host, const unsigned short port)
{
    int fd = -1;
    struct addrinfo hints = { AI_ADDRCONFIG
#ifdef AI_NUMERICSERV
                              | AI_NUMERICSERV
#endif
                              , AF_UNSPEC, SOCK_STREAM };
    char service[6]; /* "65535" with the trailing '\0' */
{'fraction_non_alphanumeric': 0.11667879228810477, 'fraction_numerical': 0.01691524190614769, 'mean_word_length': 2.7946859903381642, 'pattern_counts': {'":': 0, '<': 33, '<?xml version=': 0, '>': 49, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 4, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '863449', 'n_tokens_mistral': 3715, 'n_tokens_neox': 3501, 'n_words': 1191}