| 42 | */ |
| 43 | |
| 44 | void * /* O - Data or NULL */ |
| 45 | ppdxReadData(ppd_file_t *ppd, /* I - PPD file */ |
| 46 | const char *name, /* I - Keyword prefix */ |
| 47 | size_t *datasize) /* O - Size of data or NULL for don't care */ |
| 48 | { |
| 49 | char keyword[PPD_MAX_NAME], /* Keyword name */ |
| 50 | decoded[PPDX_MAX_CHUNK + 1]; |
| 51 | /* Decoded string */ |
| 52 | unsigned chunk = 0; /* Current chunk number */ |
| 53 | int len; /* Length of current chunk */ |
| 54 | ppd_attr_t *attr; /* Keyword/value from PPD file */ |
| 55 | Bytef *data; /* Pointer to data */ |
| 56 | size_t alloc_size; /* Allocated size of data buffer */ |
| 57 | z_stream decomp; /* Decompressor stream */ |
| 58 | int error; /* Error/status from inflate() */ |
| 59 | |
| 60 | |
| 61 | /* |
| 62 | * Range check input... |
| 63 | */ |
| 64 | |
| 65 | if (datasize) |
| 66 | *datasize = 0; |
| 67 | |
| 68 | if (!ppd || !name) |
| 69 | return (NULL); |
| 70 | |
| 71 | /* |
| 72 | * First see if there are any instances of the named keyword in the PPD... |
| 73 | */ |
| 74 | |
| 75 | snprintf(keyword, sizeof(keyword), "%s%04x", name, chunk); |
| 76 | if ((attr = ppdFindAttr(ppd, keyword, NULL)) == NULL) |
| 77 | return (NULL); |
| 78 | |
| 79 | /* |
| 80 | * Allocate some memory and start decoding... |
| 81 | */ |
| 82 | |
| 83 | data = malloc(257); |
| 84 | alloc_size = 256; |
| 85 | |
| 86 | memset(&decomp, 0, sizeof(decomp)); |
| 87 | decomp.next_out = data; |
| 88 | decomp.avail_out = 256; |
| 89 | |
| 90 | inflateInit(&decomp); |
| 91 | |
| 92 | do |
| 93 | { |
| 94 | /* |
| 95 | * Grab the data from the current attribute and decode it... |
| 96 | */ |
| 97 | |
| 98 | len = sizeof(decoded); |
| 99 | if (!httpDecode64_2(decoded, &len, attr->value) || len == 0) |
| 100 | break; |
| 101 | |