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| Rev | Author | Line No. | Line |
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| 10 | reyssat | 1 | /* Copyright (C) 2002-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis |
| 2 | * |
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| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 16 | */ |
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| 17 | |||
| 18 | /* dvi 2 gif driver, tex standard */ |
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| 8100 | bpr | 19 | #include "../Lib/libwims.h" |
| 10 | reyssat | 20 | |
| 21 | void error(char *s) |
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| 22 | { |
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| 23 | fprintf(stderr,"%s: %s\n",progname, s); |
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| 24 | exit(1); |
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| 25 | } |
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| 26 | |||
| 8100 | bpr | 27 | /* |
| 10 | reyssat | 28 | void *xmalloc(size_t n) |
| 29 | { |
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| 30 | void *p; |
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| 31 | p=malloc(n); |
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| 32 | if(p==NULL) error("Malloc failure."); |
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| 33 | return p; |
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| 34 | } |
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| 8100 | bpr | 35 | */ |
| 10 | reyssat | 36 | unsigned long int texint(void *bp, int l) |
| 37 | { |
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| 38 | unsigned long int o, t; |
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| 39 | unsigned char c, *p; |
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| 40 | int i; |
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| 41 | o=t=0; p=bp; |
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| 42 | for(i=0;i<l;i++) { |
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| 43 | c=p[i]; t=c; o<<=8; o+=t; |
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| 44 | } |
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| 45 | return o; |
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| 46 | } |
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| 47 | |||
| 48 | long int texintsigned(void *bp, int l) |
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| 49 | { |
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| 50 | long int o, t; |
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| 51 | signed char c, *p; |
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| 52 | int i; |
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| 53 | if(l<=0) return 0; |
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| 54 | p=bp; o=*p; |
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| 55 | for(i=1;i<l;i++) { |
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| 56 | c=p[i]; t=c; o<<=8; o|=t&255; |
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| 57 | } |
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| 58 | return o; |
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| 59 | } |
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| 60 | |||
| 61 | /* Strips leading spaces */ |
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| 8100 | bpr | 62 | /* |
| 10 | reyssat | 63 | char *find_word_start(char *p) |
| 64 | { |
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| 65 | int i; |
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| 66 | for(i=0; isspace(*p); p++,i++); |
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| 67 | return p; |
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| 68 | } |
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| 8100 | bpr | 69 | */ |
| 70 | /* Points to the end of the word */ |
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| 71 | /* |
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| 10 | reyssat | 72 | char *find_word_end(char *p) |
| 73 | { |
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| 74 | int i; |
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| 75 | for(i=0;!isspace(*p) && *p!=0 && i<MAX_LINELEN; p++,i++); |
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| 76 | return p; |
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| 77 | } |
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| 8100 | bpr | 78 | */ |
| 10 | reyssat | 79 | |
| 8082 | bpr | 80 | /* searches a list. Returns index if found, (-1-index of insertion) if nomatch. |
| 81 | * Uses binary search, list must be sorted. */ |
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| 82 | |||
| 8100 | bpr | 83 | /* |
| 10 | reyssat | 84 | int search_list(void *list, int items, size_t item_size, const char *str) |
| 85 | { |
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| 8082 | bpr | 86 | int i = 0; |
| 87 | while (items > 0) |
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| 88 | { |
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| 89 | int m = items / 2, j = i + m; |
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| 90 | int k = strcmp(*(char **)(list + j * item_size), str); |
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| 91 | if (k == 0) return j; |
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| 92 | if (k > 0) items = m; else {i = j + 1; items -= (m + 1);} |
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| 93 | } |
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| 94 | return ~i; |
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| 10 | reyssat | 95 | } |
| 8100 | bpr | 96 | */ |
| 10 | reyssat | 97 | /* get the content of a file, and store in buf. */ |
| 98 | int getfile(char *fname, unsigned char **buf) |
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| 99 | { |
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| 100 | FILE *f; |
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| 101 | long l, l2; |
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| 8082 | bpr | 102 | |
| 10 | reyssat | 103 | f=fopen(fname,"r"); if(f==NULL) return -1; |
| 104 | fseek(f,0,SEEK_END); l=ftell(f); fseek(f,0,SEEK_SET); |
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| 105 | if(l>FILE_LENGTH_LIMIT || l<=0) { |
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| 106 | fclose(f); return -1; |
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| 107 | } |
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| 108 | *buf=xmalloc(l+16); |
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| 109 | l2=fread(*buf,1,l,f); fclose(f); |
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| 110 | if(l!=l2) { |
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| 111 | free(*buf); return -1; |
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| 112 | } |
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| 113 | return l; |
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| 114 | } |
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| 115 | |||
| 116 | int execredirected(char *cmdf, char *inf, char *outf, char *errf, char *arg[]) |
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| 117 | { |
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| 118 | pid_t pid; |
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| 119 | int status; |
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| 120 | |||
| 121 | fflush(NULL); /* flush all output streams before forking |
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| 122 | * otherwise they will be doubled */ |
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| 123 | pid=fork(); if(pid==-1) return -1; |
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| 124 | if(!pid) { /* child */ |
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| 3835 | kbelabas | 125 | if(inf!=NULL && freopen(inf,"r",stdin) == NULL) |
| 126 | error("freopen failure"); |
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| 127 | if(outf!=NULL && freopen(outf,"w",stdout)) |
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| 128 | error("freopen failure"); |
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| 129 | if(errf!=NULL && freopen(errf,"w",stderr)) |
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| 130 | error("freopen failure"); |
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| 10 | reyssat | 131 | if(wrapexec) { |
| 132 | setreuid(getuid(),getuid());setregid(getgid(),getgid()); |
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| 133 | } |
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| 134 | if(strchr(cmdf,'/')) execv(cmdf,arg); |
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| 135 | else execvp(cmdf,arg); |
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| 136 | exit(127); |
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| 137 | } |
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| 138 | else { /* parent */ |
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| 139 | status=0; waitpid(pid,&status,0); |
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| 140 | return WEXITSTATUS(status); |
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| 141 | } |
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| 142 | } |
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| 143 | |||
| 144 | /* system(), but with variable parms |
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| 145 | * Uses sh to execute command. */ |
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| 146 | int call_sh(char *s,...) |
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| 147 | { |
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| 148 | va_list vp; |
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| 149 | char buf[MAX_LINELEN+1]; |
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| 150 | char *parmbuf[4]; |
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| 151 | int t; |
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| 152 | |||
| 153 | va_start(vp,s); |
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| 154 | vsnprintf(buf,sizeof(buf),s,vp); |
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| 155 | va_end(vp); |
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| 156 | parmbuf[0]="sh"; parmbuf[1]="-c"; parmbuf[2]=buf; parmbuf[3]=NULL; |
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| 157 | wrapexec=0; |
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| 158 | t=execredirected("sh",NULL,NULL,NULL,parmbuf); |
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| 159 | sync(); return t; |
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| 160 | } |
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| 161 | |||
| 162 | /* recursively generate a directory structure */ |
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| 8100 | bpr | 163 | /* |
| 10 | reyssat | 164 | void mkdirs(char *s) |
| 165 | { |
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| 166 | struct stat st; |
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| 167 | char *buf; |
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| 168 | if(stat(s,&st)==-1) { |
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| 169 | if(strrchr(s,'/')!=NULL) { |
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| 170 | buf=xmalloc(strlen(s)+1); |
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| 3718 | reyssat | 171 | ovlstrcpy(buf,s); *strrchr(buf,'/')=0; |
| 10 | reyssat | 172 | mkdirs(buf); free(buf); |
| 173 | } |
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| 174 | mkdir(s,-1); |
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| 175 | } |
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| 176 | } |
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| 8100 | bpr | 177 | */ |
| 10 | reyssat | 178 |