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/* Compatibility routines. |
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* |
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* IRC Services is copyright (c) 1996-2009 Andrew Church. |
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* E-mail: <achurch@achurch.org> |
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* Parts written by Andrew Kempe and others. |
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* This program is free but copyrighted software; see the file GPL.txt for |
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* details. |
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*/ |
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|
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#include "services.h" |
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|
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#if !HAVE_HSTRERROR |
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# include <netdb.h> |
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#endif |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_HSTRERROR |
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|
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/* hstrerror: return an error message for the given h_errno code. */ |
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|
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const char *hstrerror(int h_errnum) |
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{ |
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switch (h_errnum) { |
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case HOST_NOT_FOUND: return "Host not found"; |
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case TRY_AGAIN: return "Host not found, try again"; |
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case NO_RECOVERY: return "Nameserver error"; |
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case NO_DATA: return "No data of requested type"; |
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default: return "Unknown error"; |
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} |
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} |
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|
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#endif /* !HAVE_HSTRERROR */ |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_SNPRINTF |
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|
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/* [v]snprintf: Like [v]sprintf, but don't write more than len bytes |
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* (including null terminator). Return the number of bytes |
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* written. |
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*/ |
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|
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#if BAD_SNPRINTF |
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int vsnprintf(char *buf, size_t len, const char *fmt, va_list args) |
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{ |
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if (len <= 0) |
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return 0; |
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*buf = 0; |
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#undef vsnprintf |
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vsnprintf(buf, len, fmt, args); |
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#define vsnprintf my_vsnprintf |
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buf[len-1] = 0; |
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return strlen(buf); |
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} |
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#endif /* BAD_SNPRINTF */ |
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|
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int snprintf(char *buf, size_t len, const char *fmt, ...) |
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{ |
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va_list args; |
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int ret; |
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|
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va_start(args, fmt); |
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ret = vsnprintf(buf, len, fmt, args); |
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va_end(args); |
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return ret; |
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} |
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|
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#endif /* !HAVE_SNPRINTF */ |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRTOK |
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|
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/* glibc 2.2 (RedHat 7.0) has a broken strtok--it dies if called with a |
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* NULL parameter after returning NULL once. glibc and possibly other |
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* libraries also return non-NULL for strtok(NULL, "") even after |
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* returning NULL for strtok(NULL, " "). |
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*/ |
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|
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char *strtok(char *str, const char *delim) |
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{ |
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static char *current = NULL; |
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char *ret; |
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|
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if (str) |
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current = str; |
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if (!current) |
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return NULL; |
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current += strspn(current, delim); |
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ret = *current ? current : NULL; |
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current += strcspn(current, delim); |
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if (!*current) |
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current = NULL; |
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else |
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*current++ = 0; |
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return ret; |
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} |
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|
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#endif /* !HAVE_STRTOK */ |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRICMP && !HAVE_STRCASECMP |
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|
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/* stricmp, strnicmp: Case-insensitive versions of strcmp() and |
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* strncmp(). |
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*/ |
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|
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int stricmp(const char *s1, const char *s2) |
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{ |
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register int c; |
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|
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while ((c = tolower(*s1)) == tolower(*s2)) { |
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if (c == 0) |
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return 0; |
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s1++; |
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s2++; |
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} |
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if (c < tolower(*s2)) |
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return -1; |
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return 1; |
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} |
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|
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int strnicmp(const char *s1, const char *s2, size_t len) |
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{ |
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register int c; |
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|
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if (!len) |
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return 0; |
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while ((c = tolower(*s1)) == tolower(*s2) && len > 0) { |
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if (c == 0 || --len == 0) |
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return 0; |
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s1++; |
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s2++; |
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} |
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if (c < tolower(*s2)) |
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return -1; |
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return 1; |
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} |
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#endif |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRDUP && !MEMCHECKS |
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char *strdup(const char *s) |
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{ |
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char *new = malloc(strlen(s)+1); |
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if (new) |
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strcpy(new, s); |
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return new; |
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} |
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#endif |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRSPN |
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|
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size_t strspn(const char *s, const char *accept) |
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{ |
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size_t i = 0; |
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|
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while (*s && strchr(accept, *s)) |
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++i, ++s; |
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return i; |
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} |
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|
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size_t strcspn(const char *s, const char *reject) |
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{ |
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size_t i = 0; |
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|
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while (*s && !strchr(reject, *s)) |
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++i, ++s; |
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return i; |
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} |
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|
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#endif |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRERROR |
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# if HAVE_SYS_ERRLIST |
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extern char *sys_errlist[]; |
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# endif |
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|
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char *strerror(int errnum) |
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{ |
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# if HAVE_SYS_ERRLIST |
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return sys_errlist[errnum]; |
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# else |
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static char buf[20]; |
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snprintf(buf, sizeof(buf), "Error %d", errnum); |
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return buf; |
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# endif |
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} |
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#endif |
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|
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/*************************************************************************/ |
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|
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#if !HAVE_STRSIGNAL |
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char *strsignal(int signum) |
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{ |
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static char buf[32]; |
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switch (signum) { |
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case SIGHUP: strbcpy(buf, "Hangup"); break; |
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case SIGINT: strbcpy(buf, "Interrupt"); break; |
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case SIGQUIT: strbcpy(buf, "Quit"); break; |
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#ifdef SIGILL |
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case SIGILL: strbcpy(buf, "Illegal instruction"); break; |
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#endif |
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#ifdef SIGABRT |
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case SIGABRT: strbcpy(buf, "Abort"); break; |
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#endif |
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#if defined(SIGIOT) && (!defined(SIGABRT) || SIGIOT != SIGABRT) |
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case SIGIOT: strbcpy(buf, "IOT trap"); break; |
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#endif |
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#ifdef SIGBUS |
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case SIGBUS: strbcpy(buf, "Bus error"); break; |
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#endif |
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case SIGFPE: strbcpy(buf, "Floating point exception"); break; |
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case SIGKILL: strbcpy(buf, "Killed"); break; |
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case SIGUSR1: strbcpy(buf, "User signal 1"); break; |
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case SIGSEGV: strbcpy(buf, "Segmentation fault"); break; |
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case SIGUSR2: strbcpy(buf, "User signal 2"); break; |
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case SIGPIPE: strbcpy(buf, "Broken pipe"); break; |
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case SIGALRM: strbcpy(buf, "Alarm clock"); break; |
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case SIGTERM: strbcpy(buf, "Terminated"); break; |
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case SIGSTOP: strbcpy(buf, "Stopped (signal)"); break; |
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case SIGTSTP: strbcpy(buf, "Stopped"); break; |
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case SIGIO: strbcpy(buf, "I/O error"); break; |
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default: snprintf(buf, sizeof(buf), "Signal %d\n", signum); |
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break; |
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} |
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return buf; |
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} |
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#endif |
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|
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/*************************************************************************/ |
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|
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/* |
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* Local variables: |
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* c-file-style: "stroustrup" |
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* c-file-offsets: ((case-label . *) (statement-case-intro . *)) |
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* indent-tabs-mode: nil |
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* End: |
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* |
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* vim: expandtab shiftwidth=4: |
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*/ |
