Mercurial > hg > nginx-ranges
view src/os/unix/ngx_user.c @ 391:1d9bef53cd8e
Range filter: late_ranges functionality.
Add one more filtering point after postpone filter. This allows to serve
range capable replies with subrequests. It's not as efficient as range
filtering for static data (i.e. doesn't save us from reading data from
disk if some filter needs them in memory), but it may save some network
bandwidth for us and for our users.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 21 Jul 2008 05:33:01 +0400 |
parents | 984bb0b1399b |
children | 428c6e58046a |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> /* * Solaris has thread-safe crypt() * Linux has crypt_r(); "struct crypt_data" is more than 128K * FreeBSD needs the mutex to protect crypt() * * TODO: * ngx_crypt_init() to init mutex */ #if (NGX_CRYPT) #if (NGX_HAVE_GNU_CRYPT_R) ngx_int_t ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted) { char *value; size_t len; ngx_err_t err; struct crypt_data cd; ngx_set_errno(0); cd.initialized = 0; /* work around the glibc bug */ cd.current_salt[0] = ~salt[0]; value = crypt_r((char *) key, (char *) salt, &cd); err = ngx_errno; if (err == 0) { len = ngx_strlen(value); *encrypted = ngx_pnalloc(pool, len); if (*encrypted) { ngx_memcpy(*encrypted, value, len + 1); return NGX_OK; } } ngx_log_error(NGX_LOG_CRIT, pool->log, err, "crypt_r() failed"); return NGX_ERROR; } #else ngx_int_t ngx_crypt(ngx_pool_t *pool, u_char *key, u_char *salt, u_char **encrypted) { char *value; size_t len; ngx_err_t err; #if (NGX_THREADS && NGX_NONREENTRANT_CRYPT) /* crypt() is a time consuming funtion, so we only try to lock */ if (ngx_mutex_trylock(ngx_crypt_mutex) != NGX_OK) { return NGX_AGAIN; } #endif ngx_set_errno(0); value = crypt((char *) key, (char *) salt); if (value) { len = ngx_strlen(value); *encrypted = ngx_pnalloc(pool, len); if (*encrypted) { ngx_memcpy(*encrypted, value, len + 1); } #if (NGX_THREADS && NGX_NONREENTRANT_CRYPT) ngx_mutex_unlock(ngx_crypt_mutex); #endif return NGX_OK; } err = ngx_errno; #if (NGX_THREADS && NGX_NONREENTRANT_CRYPT) ngx_mutex_unlock(ngx_crypt_mutex); #endif ngx_log_error(NGX_LOG_CRIT, pool->log, err, "crypt() failed"); return NGX_ERROR; } #endif #endif /* NGX_CRYPT */