diff options
author | Tilman Sauerbeck <tilman@code-monkey.de> | 2007-05-13 00:16:36 +0200 |
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committer | Tilman Sauerbeck <tilman@code-monkey.de> | 2007-05-13 00:16:36 +0200 |
commit | 2ded69bb857ae453d90534203e5857ac3a31a1c3 (patch) | |
tree | a4934368f8fd1816b5238cb1cbc3418548229fc1 /src | |
parent | 34b3d538061cd648d90eb2bc7284000d980c8d3e (diff) |
Sanitized hex string conversion in SmsGenerateClientID().
This reduces the size of the DSO by almost 4K and gets rid of 255
relocations on load.
Diffstat (limited to 'src')
-rw-r--r-- | src/sm_genid.c | 61 |
1 files changed, 16 insertions, 45 deletions
diff --git a/src/sm_genid.c b/src/sm_genid.c index bf06644..1d1e0a3 100644 --- a/src/sm_genid.c +++ b/src/sm_genid.c @@ -78,51 +78,15 @@ in this Software without prior written authorization from The Open Group. #define TCPCONN #endif - -static char *hex_table[] = { /* for generating client IDs */ - "00", "01", "02", "03", "04", "05", "06", "07", - "08", "09", "0a", "0b", "0c", "0d", "0e", "0f", - "10", "11", "12", "13", "14", "15", "16", "17", - "18", "19", "1a", "1b", "1c", "1d", "1e", "1f", - "20", "21", "22", "23", "24", "25", "26", "27", - "28", "29", "2a", "2b", "2c", "2d", "2e", "2f", - "30", "31", "32", "33", "34", "35", "36", "37", - "38", "39", "3a", "3b", "3c", "3d", "3e", "3f", - "40", "41", "42", "43", "44", "45", "46", "47", - "48", "49", "4a", "4b", "4c", "4d", "4e", "4f", - "50", "51", "52", "53", "54", "55", "56", "57", - "58", "59", "5a", "5b", "5c", "5d", "5e", "5f", - "60", "61", "62", "63", "64", "65", "66", "67", - "68", "69", "6a", "6b", "6c", "6d", "6e", "6f", - "70", "71", "72", "73", "74", "75", "76", "77", - "78", "79", "7a", "7b", "7c", "7d", "7e", "7f", - "80", "81", "82", "83", "84", "85", "86", "87", - "88", "89", "8a", "8b", "8c", "8d", "8e", "8f", - "90", "91", "92", "93", "94", "95", "96", "97", - "98", "99", "9a", "9b", "9c", "9d", "9e", "9f", - "a0", "a1", "a2", "a3", "a4", "a5", "a6", "a7", - "a8", "a9", "aa", "ab", "ac", "ad", "ae", "af", - "b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", - "b8", "b9", "ba", "bb", "bc", "bd", "be", "bf", - "c0", "c1", "c2", "c3", "c4", "c5", "c6", "c7", - "c8", "c9", "ca", "cb", "cc", "cd", "ce", "cf", - "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", - "d8", "d9", "da", "db", "dc", "dd", "de", "df", - "e0", "e1", "e2", "e3", "e4", "e5", "e6", "e7", - "e8", "e9", "ea", "eb", "ec", "ed", "ee", "ef", - "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", - "f8", "f9", "fa", "fb", "fc", "fd", "fe", "ff", -}; - - char * SmsGenerateClientID (smsConn) SmsConn smsConn; { #if defined(TCPCONN) || defined(STREAMSCONN) + static const char hex[] = "0123456789abcdef"; char hostname[256]; - char address[64]; + char address[64], *addr_ptr = address; char temp[256]; char *id; static int sequence = 0; @@ -153,13 +117,15 @@ SmsGenerateClientID (smsConn) if (ai->ai_family == AF_INET6) { unsigned char *cp = (unsigned char *) &((struct sockaddr_in6 *)ai->ai_addr)->sin6_addr.s6_addr; - address[0] = '6'; /* IPv6 address code */ - address[1] = '\0'; + *addr_ptr++ = '6'; /* IPv6 address code */ for (i = 0 ; i < 16 ; i++) { - strcat(address, hex_table[cp[i]]); + *addr_ptr++ = hex[cp[i] >> 4]; + *addr_ptr++ = hex[cp[i] & 0x0f]; } + *addr_ptr++ = '\0'; + } else { /* Fall through to IPv4 address handling */ haddr = &((struct sockaddr_in *)ai->ai_addr)->sin_addr; #else @@ -193,10 +159,15 @@ SmsGenerateClientID (smsConn) decimal[3] = atoi (ptr1); - address[0] = '1'; - address[1] = '\0'; - for (i = 0; i < 4; i++) - strcat (address, hex_table[decimal[i]]); + *addr_ptr++ = '1'; + + for (i = 0; i < 4; i++) { + *addr_ptr++ = hex[decimal[i] >> 4]; + *addr_ptr++ = hex[decimal[i] & 0x0f]; + } + + *addr_ptr++ = '\0'; + #if defined(IPv6) && defined(AF_INET6) } freeaddrinfo(first_ai); |