1 | #include <kernel/mod2.h> |
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2 | |
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3 | #include <resources/feFopen.h> |
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4 | #include <reporter/reporter.h> |
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5 | #include <polys/mod_raw.h> |
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6 | |
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7 | #include <Singular/mod_lib.h> |
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8 | |
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9 | #include <stdio.h> |
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10 | #include <string.h> |
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11 | #include <ctype.h> |
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12 | #include <sys/stat.h> |
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13 | #include <errno.h> |
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14 | |
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15 | |
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16 | #define SI_BUILTIN_LIBSTR(name) (char*) #name ".so", |
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17 | |
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18 | const char * const si_builtin_libs[] = { SI_FOREACH_BUILTIN(SI_BUILTIN_LIBSTR) NULL }; |
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19 | |
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20 | #undef SI_BUILTIN_LIBSTR |
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21 | |
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22 | #define BYTES_TO_CHECK 7 |
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23 | |
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24 | lib_types type_of_LIB(const char *newlib, char *libnamebuf) |
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25 | { |
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26 | const unsigned char mach_o[]={0xfe,0xed,0xfa,0xce,0}; |
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27 | const unsigned char mach_O[]={0xce,0xfa,0xed,0xfe,0}; |
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28 | |
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29 | const unsigned char mach_o64[]={0xfe,0xed,0xfa,0xcf,0}; |
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30 | const unsigned char mach_O64[]={0xcf,0xfa,0xed,0xfe,0}; |
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31 | |
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32 | const unsigned char mach_FAT[]={0xca,0xfe,0xba,0xbe,0}; |
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33 | const unsigned char mach_fat[]={0xbe,0xba,0xfe,0xca,0}; |
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34 | |
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35 | const unsigned char utf16be[]={0xfe,0xff,0}; |
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36 | const unsigned char utf16le[]={0xff,0xfe,0}; |
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37 | const unsigned char utf8ms[]={0xEF,0xBB,0xBF,0}; |
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38 | |
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39 | int i=0; |
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40 | while(si_builtin_libs[i]!=NULL) |
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41 | { |
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42 | if (strcmp(newlib,si_builtin_libs[i])==0) |
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43 | { |
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44 | if(libnamebuf!=NULL) strcpy(libnamebuf,newlib); |
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45 | return LT_BUILTIN; |
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46 | } |
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47 | i++; |
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48 | } |
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49 | char buf[BYTES_TO_CHECK+1]; /* one extra for terminating '\0' */ |
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50 | struct stat sb; |
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51 | int nbytes = 0; |
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52 | int ret; |
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53 | lib_types LT=LT_NONE; |
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54 | |
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55 | FILE * fp = feFopen( newlib, "r", libnamebuf, FALSE ); |
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56 | |
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57 | do |
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58 | { |
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59 | ret = stat(libnamebuf, &sb); |
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60 | } while((ret < 0) and (errno == EINTR)); |
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61 | |
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62 | if (fp==NULL) |
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63 | { |
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64 | return LT_NOTFOUND; |
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65 | } |
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66 | if((sb.st_mode & S_IFMT) != S_IFREG) |
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67 | { |
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68 | goto lib_type_end; |
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69 | } |
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70 | if ((nbytes = fread((char *)buf, sizeof(char), BYTES_TO_CHECK, fp)) == -1) |
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71 | { |
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72 | goto lib_type_end; |
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73 | /*NOTREACHED*/ |
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74 | } |
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75 | if (nbytes == 0) |
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76 | goto lib_type_end; |
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77 | else |
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78 | { |
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79 | buf[nbytes++] = '\0'; /* null-terminate it */ |
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80 | } |
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81 | if( (strncmp(buf, "\177ELF", 4)==0)) /* generic ELF */ |
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82 | { |
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83 | LT = LT_ELF; |
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84 | //omFree(newlib); |
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85 | //newlib = omStrDup(libnamebuf); |
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86 | goto lib_type_end; |
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87 | } |
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88 | |
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89 | if( (strncmp(buf, (const char *)mach_o, 4)==0) || (strncmp(buf, (const char *)mach_O, 4)==0)) /* generic Mach-O module */ |
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90 | { |
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91 | LT = LT_MACH_O; |
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92 | //omFree(newlib); |
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93 | //newlib = omStrDup(libnamebuf); |
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94 | goto lib_type_end; |
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95 | } |
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96 | |
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97 | if( (strncmp(buf, (const char *)mach_o64, 4)==0) || (strncmp(buf, (const char *)mach_O64, 4)==0)) /* generic Mach-O 64-bit module */ |
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98 | { |
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99 | LT = LT_MACH_O; |
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100 | //omFree(newlib); |
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101 | //newlib = omStrDup(libnamebuf); |
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102 | goto lib_type_end; |
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103 | } |
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104 | |
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105 | if( (strncmp(buf, (const char *)mach_FAT, 4)==0) || (strncmp(buf, (const char *)mach_fat, 4)==0)) /* generic Mach-O fat universal module */ |
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106 | { |
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107 | LT = LT_MACH_O; |
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108 | //omFree(newlib); |
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109 | //newlib = omStrDup(libnamebuf); |
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110 | goto lib_type_end; |
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111 | } |
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112 | |
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113 | if( (strncmp(buf, "\02\020\01\016\05\022@", 7)==0)) |
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114 | { |
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115 | LT = LT_HPUX; |
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116 | //omFree(newlib); |
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117 | //newlib = omStrDup(libnamebuf); |
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118 | goto lib_type_end; |
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119 | } |
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120 | if ((strncmp(buf,(const char *)utf16be,2)==0) |
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121 | ||(strncmp(buf,(const char *)utf16le,2)==0)) |
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122 | { |
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123 | WerrorS("UTF-16 not supported"); |
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124 | LT=LT_NOTFOUND; |
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125 | goto lib_type_end; |
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126 | } |
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127 | if (strncmp(buf,(const char *)utf8ms,3)==0) |
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128 | { |
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129 | WarnS("UTF-8 detected - may not work"); |
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130 | LT=LT_SINGULAR; |
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131 | goto lib_type_end; |
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132 | } |
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133 | if(isprint(buf[0]) || buf[0]=='\n') |
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134 | { LT = LT_SINGULAR; goto lib_type_end; } |
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135 | |
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136 | lib_type_end: |
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137 | fclose(fp); |
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138 | return LT; |
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139 | } |
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