Mercurial > hg > nginx-vendor-current
diff src/http/modules/ngx_http_ssi_filter_module.c @ 58:b55cbf18157e NGINX_0_1_29
nginx 0.1.29
*) Feature: the ngx_http_ssi_module supports "include virtual" command.
*) Feature: the ngx_http_ssi_module supports the condition command like
'if expr="$NAME"' and "else" and "endif" commands. Only one nested
level is supported.
*) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and
DATE_GMT variables and "config timefmt" command.
*) Feature: the "ssi_ignore_recycled_buffers" directive.
*) Bugfix: the "echo" command did not show the default value for the
empty QUERY_STRING variable.
*) Change: the ngx_http_proxy_module was rewritten.
*) Feature: the "proxy_redirect", "proxy_pass_request_headers",
"proxy_pass_request_body", and "proxy_method" directives.
*) Feature: the "proxy_set_header" directive. The "proxy_x_var" was
canceled and must be replaced with the proxy_set_header directive.
*) Change: the "proxy_preserve_host" is canceled and must be replaced
with the "proxy_set_header Host $host" and the "proxy_redirect off"
directives, the "proxy_set_header Host $host:$proxy_port" directive
and the appropriate proxy_redirect directives.
*) Change: the "proxy_set_x_real_ip" is canceled and must be replaced
with the "proxy_set_header X-Real-IP $remote_addr" directive.
*) Change: the "proxy_add_x_forwarded_for" is canceled and must be
replaced with
the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for"
directive.
*) Change: the "proxy_set_x_url" is canceled and must be replaced with
the "proxy_set_header X-URL http://$host:$server_port$request_uri"
directive.
*) Feature: the "fastcgi_param" directive.
*) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params"
directive are canceled and must be replaced with the fastcgi_param
directives.
*) Feature: the "index" directive can use the variables.
*) Feature: the "index" directive can be used at http and server levels.
*) Change: the last index only in the "index" directive can be absolute.
*) Feature: the "rewrite" directive can use the variables.
*) Feature: the "internal" directive.
*) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR,
SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME,
REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables.
*) Change: nginx now passes the invalid lines in a client request
headers or a backend response header.
*) Bugfix: if the backend did not transfer response for a long time and
the "send_timeout" was less than "proxy_read_timeout", then nginx
returned the 408 response.
*) Bugfix: the segmentation fault was occurred if the backend sent an
invalid line in response header; bug appeared in 0.1.26.
*) Bugfix: the segmentation fault may occurred in FastCGI fault
tolerance configuration.
*) Bugfix: the "expires" directive did not remove the previous
"Expires" and "Cache-Control" headers.
*) Bugfix: nginx did not take into account trailing dot in "Host"
header line.
*) Bugfix: the ngx_http_auth_module did not work under Linux.
*) Bugfix: the rewrite directive worked incorrectly, if the arguments
were in a request.
*) Bugfix: nginx could not be built on MacOS X.
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Thu, 12 May 2005 00:00:00 +0400 |
| parents | 72eb30262aac |
| children | 0790a8599248 |
line wrap: on
line diff
--- a/src/http/modules/ngx_http_ssi_filter_module.c +++ b/src/http/modules/ngx_http_ssi_filter_module.c @@ -16,10 +16,13 @@ #define NGX_HTTP_SSI_ERROR 1 +#define NGX_HTTP_SSI_DATE_LEN 2048 + typedef struct { ngx_flag_t enable; ngx_flag_t silent_errors; + ngx_flag_t ignore_recycled_buffers; size_t min_file_chunk; size_t value_len; @@ -50,6 +53,10 @@ typedef struct { size_t looked; size_t value_len; + + ngx_uint_t output; /* unsigned output:1; */ + + ngx_str_t timefmt; } ngx_http_ssi_ctx_t; @@ -70,7 +77,8 @@ typedef struct { ngx_http_ssi_command_pt handler; ngx_http_ssi_param_t *params; - ngx_uint_t flush; /* unsigned flush:1; */ + unsigned conditional:1; + unsigned flush:1; } ngx_http_ssi_command_t; @@ -98,12 +106,28 @@ typedef enum { } ngx_http_ssi_state_e; +static ngx_int_t ngx_http_ssi_output(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx); static ngx_int_t ngx_http_ssi_parse(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx); static ngx_int_t ngx_http_ssi_echo(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_int_t ngx_http_ssi_config(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_int_t ngx_http_ssi_include(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_int_t ngx_http_ssi_if(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_int_t ngx_http_ssi_else(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_int_t ngx_http_ssi_endif(ngx_http_request_t *r, + ngx_http_ssi_ctx_t *ctx, ngx_str_t **params); +static ngx_http_variable_value_t * + ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r, uintptr_t gmt); + +static ngx_int_t ngx_http_ssi_add_variables(ngx_conf_t *cf); static void *ngx_http_ssi_create_conf(ngx_conf_t *cf); static char *ngx_http_ssi_merge_conf(ngx_conf_t *cf, void *parent, void *child); @@ -126,6 +150,13 @@ static ngx_command_t ngx_http_ssi_filte offsetof(ngx_http_ssi_conf_t, silent_errors), NULL }, + { ngx_string("ssi_ignore_recycled_buffers"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, + ngx_conf_set_flag_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_ssi_conf_t, ignore_recycled_buffers), + NULL }, + { ngx_string("ssi_min_file_chunk"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, ngx_conf_set_size_slot, @@ -139,7 +170,8 @@ static ngx_command_t ngx_http_ssi_filte static ngx_http_module_t ngx_http_ssi_filter_module_ctx = { - NULL, /* pre conf */ + ngx_http_ssi_add_variables, /* preconfiguration */ + NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ @@ -153,7 +185,7 @@ static ngx_http_module_t ngx_http_ssi_f ngx_module_t ngx_http_ssi_filter_module = { - NGX_MODULE, + NGX_MODULE_V1, &ngx_http_ssi_filter_module_ctx, /* module context */ ngx_http_ssi_filter_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ @@ -174,8 +206,16 @@ static u_char ngx_http_ssi_error_string[ static ngx_str_t ngx_http_ssi_none = ngx_string("(none)"); -#define NGX_HTTP_SSI_ECHO_VAR 0 -#define NGX_HTTP_SSI_ECHO_DEFAULT 1 +#define NGX_HTTP_SSI_ECHO_VAR 0 +#define NGX_HTTP_SSI_ECHO_DEFAULT 1 + +#define NGX_HTTP_SSI_CONFIG_TIMEFMT 0 + +#define NGX_HTTP_SSI_INCLUDE_VIRTUAL 0 +#define NGX_HTTP_SSI_INCLUDE_FILE 1 + +#define NGX_HTTP_SSI_IF_EXPR 0 + static ngx_http_ssi_param_t ngx_http_ssi_echo_params[] = { { ngx_string("var"), NGX_HTTP_SSI_ECHO_VAR, 1 }, @@ -183,13 +223,60 @@ static ngx_http_ssi_param_t ngx_http_ss { ngx_null_string, 0, 0 } }; +static ngx_http_ssi_param_t ngx_http_ssi_include_params[] = { + { ngx_string("virtual"), NGX_HTTP_SSI_INCLUDE_VIRTUAL, 0 }, +#if 0 + { ngx_string("file"), NGX_HTTP_SSI_INCLUDE_FILE, 0 }, +#endif + { ngx_null_string, 0, 0 } +}; + + +static ngx_http_ssi_param_t ngx_http_ssi_config_params[] = { + { ngx_string("timefmt"), NGX_HTTP_SSI_CONFIG_TIMEFMT, 0 }, + { ngx_null_string, 0, 0 } +}; + + +static ngx_http_ssi_param_t ngx_http_ssi_if_params[] = { + { ngx_string("expr"), NGX_HTTP_SSI_IF_EXPR, 0 }, + { ngx_null_string, 0, 0 } +}; + + +static ngx_http_ssi_param_t ngx_http_ssi_no_params[] = { + { ngx_null_string, 0, 0 } +}; + static ngx_http_ssi_command_t ngx_http_ssi_commands[] = { - { ngx_string("echo"), ngx_http_ssi_echo, ngx_http_ssi_echo_params, 0 }, - { ngx_null_string, NULL, NULL, 0 } + { ngx_string("echo"), ngx_http_ssi_echo, ngx_http_ssi_echo_params, 0, 0 }, + { ngx_string("config"), ngx_http_ssi_config, + ngx_http_ssi_config_params, 0, 0 }, + { ngx_string("include"), ngx_http_ssi_include, + ngx_http_ssi_include_params, 0, 1 }, + + { ngx_string("if"), ngx_http_ssi_if, ngx_http_ssi_if_params, 0, 0 }, + { ngx_string("else"), ngx_http_ssi_else, ngx_http_ssi_no_params, 1, 0 }, + { ngx_string("endif"), ngx_http_ssi_endif, ngx_http_ssi_no_params, 1, 0 }, + + { ngx_null_string, NULL, NULL, 0, 0 } }; +static ngx_http_variable_t ngx_http_ssi_vars[] = { + + { ngx_string("date_local"), ngx_http_ssi_date_gmt_local_variable, 0, + NGX_HTTP_VAR_NOCACHABLE }, + + { ngx_string("date_gmt"), ngx_http_ssi_date_gmt_local_variable, 1, + NGX_HTTP_VAR_NOCACHABLE }, + + { ngx_null_string, NULL, 0, 0 } +}; + + + static ngx_int_t ngx_http_ssi_header_filter(ngx_http_request_t *r) { @@ -204,9 +291,9 @@ ngx_http_ssi_header_filter(ngx_http_requ /* TODO: "text/html" -> custom types */ - if (r->headers_out.content_type - && ngx_strncasecmp(r->headers_out.content_type->value.data, - "text/html", 5) != 0) + if (r->headers_out.content_type.len == 0 + || ngx_strncasecmp(r->headers_out.content_type.data, "text/html", 5) + != 0) { return ngx_http_next_header_filter(r); } @@ -223,26 +310,33 @@ ngx_http_ssi_header_filter(ngx_http_requ ctx->value_len = conf->value_len; ctx->last_out = &ctx->out; + ctx->output = 1; + ctx->params.elts = ctx->params_array; ctx->params.size = sizeof(ngx_table_elt_t); ctx->params.nalloc = NGX_HTTP_SSI_PARAMS_N; ctx->params.pool = r->pool; - r->headers_out.content_length_n = -1; - if (r->headers_out.content_length) { - r->headers_out.content_length->key.len = 0; - r->headers_out.content_length = NULL; - } - - r->headers_out.last_modified_time = -1; - if (r->headers_out.last_modified) { - r->headers_out.last_modified->key.len = 0; - r->headers_out.last_modified = NULL; - } + ctx->timefmt.len = sizeof("%A, %d-%b-%Y %H:%M:%S %Z") - 1; + ctx->timefmt.data = (u_char *) "%A, %d-%b-%Y %H:%M:%S %Z"; r->filter_need_in_memory = 1; r->filter_ssi_need_in_memory = 1; + if (r->main == NULL) { + r->headers_out.content_length_n = -1; + if (r->headers_out.content_length) { + r->headers_out.content_length->hash = 0; + r->headers_out.content_length = NULL; + } + + r->headers_out.last_modified_time = -1; + if (r->headers_out.last_modified) { + r->headers_out.last_modified->hash = 0; + r->headers_out.last_modified = NULL; + } + } + return ngx_http_next_header_filter(r); } @@ -277,8 +371,8 @@ ngx_http_ssi_body_filter(ngx_http_reques conf = ngx_http_get_module_loc_conf(r, ngx_http_ssi_filter_module); - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "http ssi filter"); + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http ssi filter \"%V\"", &r->uri); while (ctx->in || ctx->buf) { @@ -312,19 +406,50 @@ ngx_http_ssi_body_filter(ngx_http_reques if (ctx->copy_start != ctx->copy_end) { - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "saved: %d", ctx->saved); + if (ctx->output) { + + ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "saved: %d", ctx->saved); + + if (ctx->saved) { + + if (ctx->free) { + cl = ctx->free; + ctx->free = ctx->free->next; + b = cl->buf; + ngx_memzero(b, sizeof(ngx_buf_t)); - if (ctx->saved) { + } else { + b = ngx_calloc_buf(r->pool); + if (b == NULL) { + return NGX_ERROR; + } + + cl = ngx_alloc_chain_link(r->pool); + if (cl == NULL) { + return NGX_ERROR; + } + + cl->buf = b; + } + + b->memory = 1; + b->pos = ngx_http_ssi_string; + b->last = ngx_http_ssi_string + ctx->saved; + + *ctx->last_out = cl; + ctx->last_out = &cl->next; + + ctx->saved = 0; + } if (ctx->free) { cl = ctx->free; ctx->free = ctx->free->next; b = cl->buf; - ngx_memzero(b, sizeof(ngx_buf_t)); } else { - b = ngx_calloc_buf(r->pool); + b = ngx_alloc_buf(r->pool); if (b == NULL) { return NGX_ERROR; } @@ -337,56 +462,31 @@ ngx_http_ssi_body_filter(ngx_http_reques cl->buf = b; } - b->memory = 1; - b->pos = ngx_http_ssi_string; - b->last = ngx_http_ssi_string + ctx->saved; + ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t)); + + b->last_buf = 0; + b->recycled = 0; + b->pos = ctx->copy_start; + b->last = ctx->copy_end; + if (b->in_file) { + if (conf->min_file_chunk < (size_t) (b->last - b->pos)) + { + b->file_last = b->file_pos + (b->last - b->start); + b->file_pos += b->pos - b->start; + + } else { + b->in_file = 0; + } + } + + cl->next = NULL; *ctx->last_out = cl; ctx->last_out = &cl->next; + } else { ctx->saved = 0; } - - if (ctx->free) { - cl = ctx->free; - ctx->free = ctx->free->next; - b = cl->buf; - - } else { - b = ngx_alloc_buf(r->pool); - if (b == NULL) { - return NGX_ERROR; - } - - cl = ngx_alloc_chain_link(r->pool); - if (cl == NULL) { - return NGX_ERROR; - } - - cl->buf = b; - } - - ngx_memcpy(b, ctx->buf, sizeof(ngx_buf_t)); - - b->last_buf = 0; - b->recycled = 0; - b->pos = ctx->copy_start; - b->last = ctx->copy_end; - - if (b->in_file) { - - if (conf->min_file_chunk < (size_t) (b->last - b->pos)) { - b->file_last = b->file_pos + (b->last - b->start); - b->file_pos += b->pos - b->start; - - } else { - b->in_file = 0; - } - } - - cl->next = NULL; - *ctx->last_out = cl; - ctx->last_out = &cl->next; } if (ctx->state == ssi_start_state) { @@ -420,12 +520,16 @@ ngx_http_ssi_body_filter(ngx_http_reques break; } - if (cmd->name.len == 0) { + if (cmd->name.len == 0 && ctx->output) { ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "invalid SSI command: \"%V\"", &ctx->command); goto ssi_error; } + if (!ctx->output && !cmd->conditional) { + continue; + } + ngx_memzero(params, NGX_HTTP_SSI_MAX_PARAMS * sizeof(ngx_str_t *)); @@ -479,6 +583,14 @@ ngx_http_ssi_body_filter(ngx_http_reques } } + if (cmd->flush && ctx->out) { + rc = ngx_http_ssi_output(r, ctx); + + if (rc == NGX_ERROR) { + return NGX_ERROR; + } + } + if (cmd->handler(r, ctx, params) == NGX_OK) { continue; } @@ -525,9 +637,9 @@ ngx_http_ssi_body_filter(ngx_http_reques continue; } - if (ctx->buf->recycled || ctx->buf->last_buf) { + if (ctx->buf->last_buf || ctx->buf->recycled) { + if (b == NULL) { - if (ctx->free) { cl = ctx->free; ctx->free = ctx->free->next; @@ -548,14 +660,19 @@ ngx_http_ssi_body_filter(ngx_http_reques cl->buf = b; } + b->sync = 1; + cl->next = NULL; *ctx->last_out = cl; ctx->last_out = &cl->next; } b->last_buf = ctx->buf->last_buf; - b->flush = ctx->buf->recycled; b->shadow = ctx->buf; + + if (conf->ignore_recycled_buffers == 0) { + b->recycled = ctx->buf->recycled; + } } ctx->buf = NULL; @@ -567,6 +684,17 @@ ngx_http_ssi_body_filter(ngx_http_reques return NGX_OK; } + return ngx_http_ssi_output(r, ctx); +} + + +static ngx_int_t +ngx_http_ssi_output(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx) +{ + ngx_int_t rc; + ngx_buf_t *b; + ngx_chain_t *cl; + rc = ngx_http_next_body_filter(r, ctx->out); if (ctx->busy == NULL) { @@ -1154,7 +1282,7 @@ ngx_http_ssi_echo(ngx_http_request_t *r, var = params[NGX_HTTP_SSI_ECHO_VAR]; for (i = 0; i < var->len; i++) { - var->data[i] = ngx_toupper(var->data[i]); + var->data[i] = ngx_tolower(var->data[i]); } vv = ngx_http_get_variable(r, var); @@ -1163,7 +1291,7 @@ ngx_http_ssi_echo(ngx_http_request_t *r, return NGX_HTTP_SSI_ERROR; } - if (vv == NGX_HTTP_VARIABLE_NOT_FOUND) { + if (vv == NGX_HTTP_VAR_NOT_FOUND) { value = params[NGX_HTTP_SSI_ECHO_DEFAULT]; if (value == NULL) { @@ -1204,6 +1332,325 @@ ngx_http_ssi_echo(ngx_http_request_t *r, } +static ngx_int_t +ngx_http_ssi_config(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, + ngx_str_t **params) +{ + ngx_str_t *value; + + value = params[NGX_HTTP_SSI_CONFIG_TIMEFMT]; + + if (value) { + ctx->timefmt = *value; + } + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_ssi_include(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, + ngx_str_t **params) +{ + u_char ch, *p, **value; + size_t *size, len; + ngx_uint_t i, j, n, bracket; + ngx_str_t uri, args, name; + ngx_array_t lengths, values; + ngx_http_variable_value_t *vv; + + /* TODO: file, virtual vs file */ + + uri = *params[NGX_HTTP_SSI_INCLUDE_VIRTUAL]; + args.len = 0; + args.data = NULL; + + n = ngx_http_script_variables_count(&uri); + + if (n > 0) { + + if (ngx_array_init(&lengths, r->pool, 8, sizeof(size_t *)) != NGX_OK) { + return NGX_HTTP_SSI_ERROR; + } + + if (ngx_array_init(&values, r->pool, 8, sizeof(u_char *)) != NGX_OK) { + return NGX_HTTP_SSI_ERROR; + } + + len = 0; + + for (i = 0; i < uri.len; /* void */ ) { + + name.len = 0; + + if (uri.data[i] == '$') { + + if (++i == uri.len) { + goto invalid_variable; + } + + if (uri.data[i] == '{') { + bracket = 1; + + if (++i == uri.len) { + goto invalid_variable; + } + + name.data = &uri.data[i]; + + } else { + bracket = 0; + name.data = &uri.data[i]; + } + + for ( /* void */ ; i < uri.len; i++, name.len++) { + ch = uri.data[i]; + + if (ch == '}' && bracket) { + i++; + bracket = 0; + break; + } + + if ((ch >= 'A' && ch <= 'Z') + || (ch >= 'a' && ch <= 'z') + || (ch >= '0' && ch <= '9') + || ch == '_') + { + continue; + } + + break; + } + + if (bracket) { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "the closing bracket in \"%V\" " + "variable is missing", &name); + return NGX_HTTP_SSI_ERROR; + } + + if (name.len == 0) { + goto invalid_variable; + } + + for (j = 0; j < name.len; j++) { + name.data[j] = ngx_tolower(name.data[j]); + } + + vv = ngx_http_get_variable(r, &name); + + if (vv == NULL) { + return NGX_HTTP_SSI_ERROR; + } + + if (vv == NGX_HTTP_VAR_NOT_FOUND) { + continue; + } + + name = vv->text; + + } else { + name.data = &uri.data[i]; + + while (i < uri.len && uri.data[i] != '$') { + i++; + name.len++; + } + } + + len += name.len; + + size = ngx_array_push(&lengths); + if (size == NULL) { + return NGX_HTTP_SSI_ERROR; + } + + *size = name.len; + + value = ngx_array_push(&values); + if (value == NULL) { + return NGX_HTTP_SSI_ERROR; + } + + *value = name.data; + } + + p = ngx_palloc(r->pool, len); + if (p == NULL) { + return NGX_HTTP_SSI_ERROR; + } + + uri.len = len; + uri.data = p; + + size = lengths.elts; + value = values.elts; + + for (i = 0; i < values.nelts; i++) { + p = ngx_cpymem(p, value[i], size[i]); + } + } + + for (i = 0; i < uri.len; i++) { + if (uri.data[i] == '?') { + args.len = uri.len - i - 1; + args.data = &uri.data[i + 1]; + uri.len -= args.len + 1; + + break; + } + } + + if (ngx_http_subrequest(r, &uri, &args) != NGX_OK) { + return NGX_HTTP_SSI_ERROR; + } + + return NGX_OK; + +invalid_variable: + + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "invalid variable name in \"%V\"", &uri); + + return NGX_ERROR; +} + + +static ngx_int_t +ngx_http_ssi_if(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, + ngx_str_t **params) +{ + ngx_str_t *expr, var; + ngx_uint_t i; + ngx_http_variable_value_t *vv; + + expr = params[NGX_HTTP_SSI_IF_EXPR]; + + if (expr->data[0] != '$') { + ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, + "invalid variable name in \"%V\"", expr); + return NGX_HTTP_SSI_ERROR; + } + + var.len = expr->len - 1; + var.data = expr->data + 1; + + for (i = 0; i < var.len; i++) { + var.data[i] = ngx_tolower(var.data[i]); + } + + vv = ngx_http_get_variable(r, &var); + + if (vv == NULL) { + return NGX_HTTP_SSI_ERROR; + } + + if (vv != NGX_HTTP_VAR_NOT_FOUND && vv->text.len != 0) { + ctx->output = 1; + + } else { + ctx->output = 0; + } + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_ssi_else(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, + ngx_str_t **params) +{ + ctx->output = !ctx->output; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_ssi_endif(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx, + ngx_str_t **params) +{ + ctx->output = 1; + + return NGX_OK; +} + + +static ngx_http_variable_value_t * +ngx_http_ssi_date_gmt_local_variable(ngx_http_request_t *r, uintptr_t gmt) +{ + ngx_http_ssi_ctx_t *ctx; + ngx_http_variable_value_t *vv; + struct tm tm; + char buf[NGX_HTTP_SSI_DATE_LEN]; + + vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); + if (vv == NULL) { + return NULL; + } + + ctx = ngx_http_get_module_ctx(r, ngx_http_ssi_filter_module); + + if (ctx->timefmt.len == sizeof("%s") - 1 + && ctx->timefmt.data[0] == '%' && ctx->timefmt.data[1] == 's') + { + vv->value = ngx_time() + (gmt ? 0 : ngx_gmtoff); + + vv->text.data = ngx_palloc(r->pool, NGX_TIME_T_LEN); + if (vv->text.data == NULL) { + return NULL; + } + + vv->text.len = ngx_sprintf(vv->text.data, "%T", vv->value) + - vv->text.data; + return vv; + } + + if (gmt) { + ngx_libc_gmtime(&tm); + } else { + ngx_libc_localtime(&tm); + } + + vv->value = ngx_time() + (gmt ? 0 : ngx_gmtoff); + + vv->text.len = strftime(buf, NGX_HTTP_SSI_DATE_LEN, + (char *) ctx->timefmt.data, &tm); + if (vv->text.len == 0) { + return NULL; + } + + vv->text.data = ngx_palloc(r->pool, vv->text.len); + if (vv->text.data == NULL) { + return NULL; + } + + ngx_memcpy(vv->text.data, buf, vv->text.len); + + return vv; +} + + +static ngx_int_t +ngx_http_ssi_add_variables(ngx_conf_t *cf) +{ + ngx_http_variable_t *var, *v; + + for (v = ngx_http_ssi_vars; v->name.len; v++) { + var = ngx_http_add_variable(cf, &v->name, v->flags); + if (var == NULL) { + return NGX_ERROR; + } + + var->handler = v->handler; + var->data = v->data; + } + + return NGX_OK; +} + + static void * ngx_http_ssi_create_conf(ngx_conf_t *cf) { @@ -1216,6 +1663,7 @@ ngx_http_ssi_create_conf(ngx_conf_t *cf) conf->enable = NGX_CONF_UNSET; conf->silent_errors = NGX_CONF_UNSET; + conf->ignore_recycled_buffers = NGX_CONF_UNSET; conf->min_file_chunk = NGX_CONF_UNSET_SIZE; conf->value_len = NGX_CONF_UNSET_SIZE; @@ -1232,6 +1680,8 @@ ngx_http_ssi_merge_conf(ngx_conf_t *cf, ngx_conf_merge_value(conf->enable, prev->enable, 0); ngx_conf_merge_value(conf->silent_errors, prev->silent_errors, 0); + ngx_conf_merge_value(conf->ignore_recycled_buffers, + prev->ignore_recycled_buffers, 0); ngx_conf_merge_size_value(conf->min_file_chunk, prev->min_file_chunk, 1024); ngx_conf_merge_size_value(conf->value_len, prev->value_len, 256);