[6243] | 1 | /* Copyright (C) 1988 Tim Shepard All rights reserved. */ |
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| 2 | |
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| 3 | #include "synctree.h" |
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[8915] | 4 | #include <string.h> |
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[6243] | 5 | #include <stdio.h> |
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[7940] | 6 | |
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[6243] | 7 | extern char *date_db_name; |
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| 8 | extern rule rules[]; |
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| 9 | extern unsigned int lastrule; |
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| 10 | extern unsigned int rflag; |
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| 11 | |
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| 12 | extern bool nosrcrules; |
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| 13 | extern bool nodstrules; |
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| 14 | |
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[8915] | 15 | extern char *src_rule_file; |
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| 16 | extern char *dst_rule_file; |
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[6243] | 17 | |
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| 18 | extern int verbosef; |
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| 19 | |
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| 20 | char srcpath; |
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| 21 | char dstpath; |
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| 22 | |
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| 23 | void compute_ifs(); |
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| 24 | |
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| 25 | int findrule(pathname,rtype,ftype,srcpath) |
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| 26 | enum rule_type rtype; |
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| 27 | char *pathname, *srcpath; |
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| 28 | { |
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| 29 | int i; |
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| 30 | char *p; |
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| 31 | |
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| 32 | if (verbosef>2) { |
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| 33 | printf("findrule of |%s| rtype = %d\n", pathname, rtype); |
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| 34 | } |
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| 35 | |
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| 36 | /* First we catch the special file names which we never want to be |
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| 37 | * updated. They are "." and "..". If pathname refers to one of |
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| 38 | * these files, we return rule 0 which should always be a "map *". |
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| 39 | * We also map ".reconcile_dates*" files (date_db_name) to nowhere |
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| 40 | * (by using rule 0). |
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| 41 | */ |
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| 42 | |
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[8915] | 43 | if (p = strrchr(pathname,'/')) |
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[6243] | 44 | p++; |
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| 45 | else |
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| 46 | p = pathname; |
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| 47 | |
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| 48 | if ((strcmp(p,".") == 0) || (strcmp(p,"..") == 0) || |
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| 49 | (strncmp(p,date_db_name,strlen(date_db_name)) == 0)) |
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| 50 | return |
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| 51 | (rtype == R_MAP)? 0 : |
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| 52 | (rtype == R_ACTION)? 1 : |
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| 53 | panic("findrule: rtype is unexpected rule type for special case"); |
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| 54 | |
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| 55 | /* now search the normal rules */ |
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| 56 | for (i = lastrule ; i >= 0 ; i--) { |
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| 57 | switch (rules[i].type) { |
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| 58 | case R_MAP: |
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| 59 | if ((rtype == R_MAP) && |
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| 60 | hastype(rules[i].u.u_map.file_types,ftype) && |
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| 61 | glob_match(rules[i].u.u_map.globexp,pathname)) |
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| 62 | return i; |
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| 63 | break; |
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| 64 | case R_CHASE: |
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| 65 | if ((rtype == R_CHASE) && |
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| 66 | (ftype == TYPE_L) && |
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| 67 | glob_match(rules[i].u.u_chase.globexp,pathname)) |
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| 68 | return i; |
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| 69 | break; |
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| 70 | case R_ACTION: |
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| 71 | if (verbosef > 2) { |
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| 72 | printf("Checking for a match with rule %d:\n",i); |
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| 73 | printf("\tFile types: 0x%02.2x\t(source type: 0x%02.2x)\n", |
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| 74 | rules[i].u.u_action.file_types, ftype); |
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| 75 | printf("\tAction type: %d\n", |
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| 76 | rules[i].u.u_action.type); |
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| 77 | } |
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| 78 | if ((rtype == R_ACTION) && |
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| 79 | glob_match(rules[i].u.u_action.globexp,pathname)) |
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| 80 | { |
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| 81 | if (verbosef > 2) { |
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| 82 | printf("Rule %d - regexp passed\n", i); |
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| 83 | } |
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| 84 | |
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| 85 | /* |
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| 86 | * A "virtual" file (one that exists only in the target) |
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| 87 | * can only have one of a couple actions performed on it: |
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| 88 | * "delete" and "ignore" |
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| 89 | */ |
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| 90 | if (hastype(ftype,TYPE_V) && |
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| 91 | rules[i].u.u_action.type != ACTION_DELETE && |
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| 92 | rules[i].u.u_action.type != ACTION_IGNORE) |
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| 93 | break; |
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| 94 | |
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| 95 | /* |
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| 96 | * Don't waste time checking for executables if there is |
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| 97 | * already a match... |
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| 98 | */ |
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| 99 | if (hastype(rules[i].u.u_action.file_types,ftype)) { |
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| 100 | if (verbosef>2) { |
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| 101 | printf("findrule %s - matches general mask; rule %d\n", pathname, i); |
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| 102 | } |
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| 103 | return i; |
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| 104 | } |
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| 105 | |
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| 106 | /* |
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| 107 | * We have been unable to establish a match; check if this |
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| 108 | * rule applies to executables and if the file in question |
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| 109 | * is an executable. |
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| 110 | */ |
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| 111 | if (hastype(rules[i].u.u_action.file_types,TYPE_X) && |
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| 112 | !hastype(rules[i].u.u_action.file_types,TYPE_R) && |
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| 113 | (ftype == TYPE_R)) |
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| 114 | { |
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| 115 | /* |
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| 116 | * At this point, we know: |
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| 117 | * 1. The pathname matches the pattern supplied. |
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| 118 | * 2. The pathname should be an executable. |
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| 119 | */ |
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| 120 | |
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| 121 | int fd, nbytes; |
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| 122 | unsigned long magic; |
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| 123 | unsigned short *smagic = |
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| 124 | (unsigned short *)&magic; |
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| 125 | |
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| 126 | #define swabs(a) (((a&0xff00) >> 8) | ((a&0xff) << 8)) |
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| 127 | #define swabl(a) ((a>>24)&0xff | (((a>>16)&0xff)<<8) | \ |
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| 128 | (((a>>8)&0xff)<<16) | ((a&0xff)<<24)) |
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| 129 | |
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| 130 | if ((fd=open(srcpath,0,0)) < 0) |
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| 131 | break; |
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| 132 | nbytes = read(fd,&magic,sizeof(magic)); |
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| 133 | close(fd); |
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| 134 | |
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| 135 | if (nbytes != sizeof(magic)) |
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| 136 | break; |
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| 137 | |
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| 138 | #ifdef ZMAGIC |
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| 139 | #define xxx(a) case(a): case(swabl(a)): |
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| 140 | switch(magic) { |
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| 141 | xxx(ZMAGIC); |
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| 142 | xxx(NMAGIC); |
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| 143 | xxx(OMAGIC); |
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| 144 | #ifdef Z0MAGIC |
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| 145 | xxx(Z0MAGIC); |
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| 146 | #endif |
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| 147 | if (verbosef>2) { |
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| 148 | printf("findrule %s - matches (COFF executable); rule %d\n", pathname, i); |
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| 149 | } |
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| 150 | return i; |
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| 151 | |
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| 152 | default: |
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| 153 | break; /* Not an a.out executable */ |
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| 154 | } |
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| 155 | #undef xxx |
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| 156 | #endif /* ZMAGIC */ |
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| 157 | |
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| 158 | #ifdef F_EXEC |
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| 159 | #define xxx(a) \ |
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| 160 | if (*smagic == (a) || *smagic == (swabs(a))) { \ |
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| 161 | if (verbosef>2) { \ |
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| 162 | printf("findrule %s - matches (COFF executable); rule %d\n", \ |
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| 163 | pathname, i); \ |
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| 164 | } \ |
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| 165 | return i; \ |
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| 166 | } |
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| 167 | |
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| 168 | #ifdef B16MAGIC |
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| 169 | /* Basic-16 */ |
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| 170 | xxx(B16MAGIC); |
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| 171 | xxx(BTVMAGIC); |
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| 172 | #endif |
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| 173 | #ifdef X86MAGIC |
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| 174 | /* x86 */ |
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| 175 | xxx(X86MAGIC); |
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| 176 | xxx(XTVMAGIC); |
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| 177 | #endif |
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| 178 | #ifdef I286SMAGIC |
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| 179 | xxx(I286SMAGIC); |
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| 180 | xxx(I286LMAGIC); |
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| 181 | #endif |
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| 182 | #ifdef N3BMAGIC |
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| 183 | /* n3b */ |
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| 184 | xxx(N3BMAGIC); |
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| 185 | xxx(NTVMAGIC); |
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| 186 | #endif |
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| 187 | #ifdef FBOMAGIC |
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| 188 | /* MAC-32, 3b-5 */ |
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| 189 | xxx(FBOMAGIC); |
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| 190 | xxx(RBOMAGIC); |
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| 191 | xxx(MTVMAGIC); |
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| 192 | #endif |
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| 193 | #ifdef VAXWRMAGIC |
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| 194 | /* VAX 11/780 and VAX 11/750 */ |
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| 195 | xxx(VAXWRMAGIC); |
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| 196 | xxx(VAXROMAGIC); |
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| 197 | #endif |
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| 198 | #ifdef MC68MAGIC |
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| 199 | /* Motorola 68000 */ |
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| 200 | xxx(MC68MAGIC); |
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| 201 | xxx(MC68TVMAGIC); |
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| 202 | xxx(M68MAGIC); |
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| 203 | xxx(M68TVMAGIC); |
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| 204 | #endif |
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| 205 | #ifdef M68NSMAGIC |
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| 206 | /* UniSoft additions for 68000 */ |
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| 207 | xxx(M68NSMAGIC); |
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| 208 | #endif |
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| 209 | #ifdef AMDWRMAGIC |
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| 210 | /* Amdahl 470/580 */ |
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| 211 | xxx(AMDWRMAGIC); |
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| 212 | xxx(AMDROMAGIC); |
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| 213 | #endif |
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| 214 | #ifdef U370WRMAGIC |
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| 215 | /* IBM 370 */ |
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| 216 | xxx(U370WRMAGIC); |
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| 217 | xxx(U370ROMAGIC); |
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| 218 | #endif |
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| 219 | #ifdef U800WRMAGIC |
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| 220 | /* IBM RT */ |
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| 221 | xxx(U800WRMAGIC); |
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| 222 | xxx(U800ROMAGIC); |
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| 223 | xxx(U800TOCMAGIC); |
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| 224 | #endif |
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| 225 | #ifdef U802WRMAGIC |
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| 226 | /* IBM R2 */ |
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| 227 | xxx(U802WRMAGIC); |
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| 228 | xxx(U802ROMAGIC); |
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| 229 | xxx(U802TOCMAGIC); |
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| 230 | #endif |
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| 231 | #ifdef MIPSEBMAGIC |
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| 232 | /* DEC Mips */ |
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| 233 | xxx(MIPSEBMAGIC); |
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| 234 | xxx(MIPSELMAGIC); |
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| 235 | xxx(SMIPSEBMAGIC); |
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| 236 | xxx(SMIPSELMAGIC); |
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| 237 | xxx(MIPSEBUMAGIC); |
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| 238 | xxx(MIPSELUMAGIC); |
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| 239 | #endif |
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| 240 | |
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| 241 | #undef xxx |
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| 242 | #endif /* F_EXEC */ |
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| 243 | break; /* Not an executable */ |
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| 244 | } |
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| 245 | } |
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| 246 | break; |
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| 247 | case R_WHEN: |
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| 248 | if ((rtype == R_WHEN) && |
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| 249 | hastype(rules[i].u.u_when.file_types,ftype) && |
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| 250 | glob_match(rules[i].u.u_when.globexp,pathname)) |
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| 251 | return i; |
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| 252 | break; |
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| 253 | case R_IF: |
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| 254 | if (rules[i].u.u_if.inactive) { |
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| 255 | i = rules[i].u.u_if.first; /* will be decremented in a moment... */ |
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| 256 | continue; |
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| 257 | } |
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| 258 | break; |
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| 259 | case R_IF_ELSE: |
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| 260 | if (rules[i].u.u_if.inactive) { |
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| 261 | /* do nothing (we do the else clause and then hit the skip) */ |
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| 262 | } else { |
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| 263 | i = rules[i].u.u_if.first; /* will be decremented in a moment... */ |
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| 264 | continue; |
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| 265 | } |
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| 266 | break; |
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| 267 | case R_SKIP: |
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| 268 | i = rules[i].u.u_skip.first; |
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| 269 | continue; |
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| 270 | case R_FRAMEMARKER: |
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| 271 | break; |
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| 272 | default: |
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| 273 | panic("findrule: unknown rule type"); |
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| 274 | } |
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| 275 | } |
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| 276 | |
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| 277 | /* we did not find a rule */ |
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| 278 | switch(rtype) { |
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| 279 | case R_CHASE: |
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| 280 | case R_WHEN: |
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| 281 | /* the code that looks for these types of rules can deal with |
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| 282 | * this error return value */ |
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| 283 | return -1; |
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| 284 | default: |
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| 285 | panic("findrule: did not find rule"); |
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| 286 | } |
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| 287 | } |
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| 288 | |
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| 289 | |
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| 290 | void getrules(src,dst) |
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| 291 | char *src; |
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| 292 | char *dst; |
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| 293 | { |
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| 294 | char *srcrules,*dstrules; |
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| 295 | static firstread = 0; |
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| 296 | extern int aflag; |
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| 297 | extern char *afile; |
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| 298 | |
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| 299 | newrule(); |
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| 300 | lstrule.type = R_FRAMEMARKER; |
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| 301 | |
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| 302 | vtable_push(); |
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| 303 | |
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[10717] | 304 | srcrules = (char *) malloc(strlen(src) + strlen(src_rule_file) + 2); |
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[6243] | 305 | (void) strcpy(srcrules,src); |
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| 306 | (void) strcat(srcrules,"/"); |
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| 307 | (void) strcat(srcrules,src_rule_file); |
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| 308 | |
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[10717] | 309 | dstrules = (char *) malloc(strlen(dst) + strlen(dst_rule_file) + 2); |
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[6243] | 310 | (void) strcpy(dstrules,dst); |
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| 311 | (void) strcat(dstrules,"/"); |
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| 312 | (void) strcat(dstrules,dst_rule_file); |
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| 313 | |
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| 314 | if (nosrcrules == FALSE) |
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| 315 | if (readrules(srcrules,src,dst) != 0) |
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| 316 | { fprintf(stderr,"Error while reading %s\n", srcrules); |
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| 317 | panic("Syntax error in conf file."); |
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| 318 | } |
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| 319 | |
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| 320 | if (nodstrules == FALSE) |
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| 321 | if (readrules(dstrules,src,dst) != 0) |
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| 322 | { fprintf(stderr,"Error while reading %s\n",dstrules); |
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| 323 | panic("Syntax error in conf file."); |
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| 324 | } |
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| 325 | |
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| 326 | if (!(firstread++) && aflag && readrules(afile,src,dst) != 0) |
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| 327 | { fprintf(stderr,"Error while reading %s\n",afile); |
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| 328 | panic("Syntax error in conf file."); |
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| 329 | } |
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| 330 | |
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| 331 | compute_ifs(); /* see below */ |
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[10717] | 332 | free(dstrules); |
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| 333 | free(srcrules); |
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[6243] | 334 | } |
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| 335 | |
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| 336 | |
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| 337 | void poprules() |
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| 338 | { |
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| 339 | vtable_pop(); |
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| 340 | |
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| 341 | for(;;lastrule--) { |
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| 342 | switch(lstrule.type) { |
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| 343 | case R_MAP: |
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| 344 | sfree(lstrule.u.u_map.globexp); |
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| 345 | svecfree(lstrule.u.u_map.dests); |
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| 346 | continue; |
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| 347 | case R_CHASE: |
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| 348 | sfree(lstrule.u.u_chase.globexp); |
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| 349 | continue; |
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| 350 | case R_ACTION: |
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| 351 | sfree(lstrule.u.u_action.globexp); |
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| 352 | continue; |
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| 353 | case R_WHEN: |
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| 354 | sfree(lstrule.u.u_when.globexp); |
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| 355 | svecfree(lstrule.u.u_when.cmds); |
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| 356 | continue; |
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| 357 | case R_IF: |
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| 358 | case R_IF_ELSE: |
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| 359 | bool_free(lstrule.u.u_if.boolexp); |
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| 360 | continue; |
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| 361 | case R_FRAMEMARKER: |
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| 362 | break; |
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| 363 | default: |
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| 364 | panic("poprules: unknown rule type"); |
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| 365 | } |
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| 366 | lastrule--; |
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| 367 | break; |
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| 368 | } |
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| 369 | |
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| 370 | #ifdef notdef |
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| 371 | /* This doesn't need to be done here because, reconcile will not call */ |
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| 372 | /* findrule after calling this without first calling getrules. If */ |
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| 373 | /* this ever changes, this will have to be turned on again. */ |
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| 374 | compute_ifs(); /* defined below */ |
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| 375 | #endif notdef |
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| 376 | } |
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| 377 | |
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| 378 | static void compute_ifs() |
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| 379 | { |
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| 380 | int i; |
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| 381 | |
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| 382 | rflag &= ~RFLAG_SCAN_TARGET; |
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| 383 | |
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| 384 | for(i = lastrule; i >= 0; i--) { |
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| 385 | switch(rules[i].type) { |
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| 386 | case R_IF: |
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| 387 | case R_IF_ELSE: |
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| 388 | rules[i].u.u_if.inactive = (bool) ! bool_eval(rules[i].u.u_if.boolexp); |
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| 389 | break; |
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| 390 | case R_CHASE: |
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| 391 | case R_MAP: |
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| 392 | case R_WHEN: |
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| 393 | case R_FRAMEMARKER: |
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| 394 | break; |
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| 395 | case R_ACTION: |
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| 396 | if (rules[i].u.u_action.type == ACTION_DELETE) |
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| 397 | rflag |= RFLAG_SCAN_TARGET; |
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| 398 | break; |
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| 399 | default: |
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| 400 | panic("compute_ifs: unknown rule type"); |
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| 401 | } |
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| 402 | } |
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| 403 | } |
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| 404 | |
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| 405 | |
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| 406 | void newrule() |
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| 407 | { |
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| 408 | if (++lastrule >= MAXNRULES) |
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| 409 | panic("newrule: too many rules"); |
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| 410 | if (verbosef > 2) |
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| 411 | printf("newrule: lastrule = %d\n",lastrule); |
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| 412 | } |
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| 413 | |
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| 414 | |
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