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sheepwool.c
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sheepwool.c
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#include "config.h"
#include <dirent.h>
#include <errno.h>
#include <libgen.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/select.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include <curl/curl.h>
#include <kcgi.h>
#include <lauxlib.h>
#include <lua.h>
#include <lualib.h>
#include <magic.h>
#include <sass/base.h>
#include <sass/context.h>
#include <sqlite3.h>
#include "base64.h"
#include "etlua.h"
#include "sheepwool.h"
static void dumpstack(lua_State *L) {
int top = lua_gettop(L);
for (int i = 1; i <= top; i++) {
printf("%d\t%s\t", i, luaL_typename(L, i));
switch (lua_type(L, i)) {
case LUA_TNUMBER:
printf("%g\n", lua_tonumber(L, i));
break;
case LUA_TSTRING:
printf("%s\n", lua_tostring(L, i));
break;
case LUA_TBOOLEAN:
printf("%s\n", (lua_toboolean(L, i) ? "true" : "false"));
break;
case LUA_TNIL:
printf("%s\n", "nil");
break;
default:
printf("%p\n", lua_topointer(L, i));
break;
}
}
}
static int sqlite_init(sqlite3 *db, bool read_only) {
int num_cmds = read_only ? 3 : 11;
const char *stmts[num_cmds];
stmts[0] = "PRAGMA encoding = 'UTF-8'";
stmts[1] = "PRAGMA foreign_keys = true";
stmts[2] = "PRAGMA journal_mode = WAL";
if (!read_only) {
stmts[3] = "PRAGMA application_id = 'sheepwool'";
stmts[4] = "PRAGMA secure_delete = 1";
stmts[5] = "BEGIN";
stmts[6] = "CREATE TABLE IF NOT EXISTS vars ("
" key TEXT PRIMARY KEY,"
" value ANY NOT NULL"
")";
stmts[7] = "CREATE TABLE IF NOT EXISTS resources ("
" slug TEXT PRIMARY KEY,"
" srcpath TEXT,"
" mime TEXT,"
" name TEXT,"
" status INT NOT NULL,"
" content BLOB,"
" size INT NOT NULL DEFAULT 0,"
" template TEXT,"
" moved_to TEXT,"
" ctime TEXT,"
" mtime TEXT"
")";
stmts[8] = "CREATE TABLE IF NOT EXISTS tags ("
" slug TEXT NOT NULL,"
" tag TEXT NOT NULL,"
" PRIMARY KEY (slug, tag)"
")";
stmts[9] =
"CREATE INDEX IF NOT EXISTS resource_status ON resources(status)";
stmts[10] = "COMMIT";
}
for (int i = 0; i < num_cmds; i++) {
int rc = execute(db, stmts[i]);
if (rc) {
if (i > 5) {
syslog(LOG_ERR, "Rolling back init transaction");
execute(db, "ROLLBACK");
}
return rc;
}
}
return 0;
}
int sqlite_connect(sqlite3 **db, char *dbpath, bool read_only) {
syslog(LOG_DEBUG, "Connecting to database %s", dbpath);
int rc =
sqlite3_open_v2(dbpath, db,
read_only ? SQLITE_OPEN_READONLY
: SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE,
NULL);
if (rc) {
syslog(LOG_ERR, "Failed connecting to database %s: %s", dbpath,
sqlite3_errstr(rc));
goto cleanup;
}
syslog(LOG_DEBUG, "Successfully connected to database");
sqlite3_busy_timeout(*db, 500);
rc = sqlite_init(*db, read_only);
if (rc) {
syslog(LOG_ERR, "Database initialization failed, exiting");
goto cleanup;
}
cleanup:
if (rc)
sqlite_disconnect(*db);
return rc;
}
int sqlite_disconnect(sqlite3 *db) {
syslog(LOG_DEBUG, "Disconnecting from database");
return sqlite3_close(db);
}
struct bind_param sqlite_bind(int type, int int_value, double double_value,
char *char_value, unsigned long size) {
struct bind_param p = {.type = type,
.int_value = int_value,
.double_value = double_value,
.char_value = char_value,
.size = size};
return p;
}
static int bind_params(sqlite3_stmt **stmt, int num_params,
struct bind_param *params) {
if (num_params == 0)
return 0;
for (int i = 0; i < num_params; i++) {
int rc = 0;
struct bind_param bp = params[i];
switch (bp.type) {
case SQLITE_INTEGER:
rc = sqlite3_bind_int(*stmt, i + 1, bp.int_value);
break;
case SQLITE_FLOAT:
rc = sqlite3_bind_double(*stmt, i + 1, bp.double_value);
break;
case SQLITE_TEXT:
rc = sqlite3_bind_text(*stmt, i + 1, bp.char_value, -1, NULL);
break;
case SQLITE_BLOB:
rc = sqlite3_bind_blob(*stmt, i + 1, bp.char_value, bp.size, NULL);
break;
case SQLITE_NULL:
rc = sqlite3_bind_null(*stmt, i + 1);
break;
}
if (rc) {
return rc;
}
}
return 0;
}
static int prepare_va(sqlite3 *db, sqlite3_stmt **stmt, const char *sql,
va_list *params) {
syslog(LOG_DEBUG, "Preparing statement %s", sql);
int rc = sqlite3_prepare_v2(db, sql, -1, stmt, NULL);
if (rc) {
syslog(LOG_ERR, "Failed preparing statement: %s (code: %d)",
sqlite3_errstr(rc), rc);
return rc;
}
int num_params = sqlite3_bind_parameter_count(*stmt);
if (num_params) {
syslog(LOG_DEBUG, "Parsing parameters for %s", sql);
struct bind_param *params_array =
malloc(sizeof(struct bind_param) * num_params);
for (int i = 0; i < num_params; i++) {
struct bind_param bp = va_arg(*params, struct bind_param);
params_array[i] = bp;
}
va_end(*params);
syslog(LOG_DEBUG, "Binding parameters for %s", sql);
rc = bind_params(stmt, num_params, params_array);
if (rc) {
syslog(LOG_ERR, "Failed binding parameters: %s", sqlite3_errstr(rc));
}
free(params_array);
} else {
va_end(*params);
}
return rc;
}
int prepare(sqlite3 *db, sqlite3_stmt **stmt, const char *sql, ...) {
va_list params;
va_start(params, sql);
return prepare_va(db, stmt, sql, ¶ms);
}
int execute(sqlite3 *db, const char *sql, ...) {
syslog(LOG_DEBUG, "----------------------");
va_list params;
va_start(params, sql);
sqlite3_stmt *stmt;
int rc = prepare_va(db, &stmt, sql, ¶ms);
if (rc) {
goto cleanup;
}
syslog(LOG_DEBUG, "Executing statement %s", sql);
rc = sqlite3_step(stmt);
if (rc != SQLITE_DONE && rc != SQLITE_ROW) {
syslog(LOG_ERR, "Failed executing statement: %s (code: %d)",
sqlite3_errstr(rc), rc);
goto cleanup;
}
rc = 0;
cleanup:
syslog(LOG_DEBUG, "Finalizing statement %s", sql);
sqlite3_finalize(stmt);
return rc;
}
static char *get_nullable_text(sqlite3_stmt *stmt, int col_num) {
if (sqlite3_column_type(stmt, col_num) == SQLITE_NULL) {
return NULL;
}
return sqlite3_mprintf("%s", sqlite3_column_text(stmt, col_num));
}
static void *get_nullable_blob(sqlite3_stmt *stmt, int col_num) {
if (sqlite3_column_type(stmt, col_num) == SQLITE_NULL) {
return NULL;
}
const char *blob = sqlite3_column_blob(stmt, col_num);
int blob_size = sqlite3_column_bytes(stmt, col_num);
char *dest = sqlite3_malloc(blob_size);
memcpy(dest, blob, blob_size);
return dest;
}
static void pushtablestring(lua_State *L, const char *key, char *value) {
lua_pushstring(L, key);
lua_pushstring(L, value);
lua_settable(L, -3);
}
static void pushtablelstring(lua_State *L, const char *key, char *value,
int size) {
lua_pushstring(L, key);
lua_pushlstring(L, value, size);
lua_settable(L, -3);
}
static void pushtableint(lua_State *L, const char *key, int value) {
lua_pushstring(L, key);
lua_pushinteger(L, value);
lua_settable(L, -3);
}
static int open_etlua(lua_State *L) {
if (luaL_loadstring(L, (const char *)etlua) != LUA_OK) {
return lua_error(L);
}
lua_call(L, 0, 1);
return 1;
}
static int lua_render(lua_State *L) {
// stack: [db, slug, context]
sqlite3 *db = (sqlite3 *)lua_touserdata(L, 1);
char *tmpl_name = sqlite3_mprintf("%s", lua_tostring(L, 2));
syslog(LOG_DEBUG, "Rendering template %s", tmpl_name);
luaL_requiref(L, "etlua", open_etlua, 0);
// stack: [db, slug, context, etlua]
sqlite3_stmt *stmt;
int rc = sqlite3_prepare_v2(db,
"SELECT content, template"
" FROM resources"
" WHERE slug = ?",
-1, &stmt, NULL);
if (rc) {
lua_pushfstring(L, "Failed preparing template statement: %s",
sqlite3_errstr(rc));
goto cleanup;
}
while (true) {
if (lua_getfield(L, 4, "render") != LUA_TFUNCTION) {
lua_pushfstring(L, "Failed getting render function: got %s",
lua_typename(L, lua_type(L, -1)));
goto cleanup;
}
// stack: [db, slug, context, etlua, render]
rc = sqlite3_bind_text(stmt, 1, tmpl_name, -1, NULL);
if (rc) {
lua_pushfstring(L, "Failed binding template slug: %s",
sqlite3_errstr(rc));
goto cleanup;
}
int rc = sqlite3_step(stmt);
if (rc != SQLITE_ROW) {
lua_pushfstring(L, "Failed loading template %s: %s", tmpl_name,
sqlite3_errstr(rc));
goto cleanup;
}
if (sqlite3_column_type(stmt, 0) == SQLITE_NULL) {
lua_pushfstring(L, "Failed getting template: content is NULL");
goto cleanup;
}
const void *tmpl = sqlite3_column_blob(stmt, 0);
int tmpl_size = sqlite3_column_bytes(stmt, 0);
lua_pushlstring(L, tmpl, tmpl_size);
// stack: [db, slug, context, etlua, render, template]
sqlite3_free(tmpl_name);
tmpl_name = sqlite3_mprintf("%s", sqlite3_column_text(stmt, 1));
lua_pushnil(L);
lua_copy(L, 3, 7);
// stack: [db, slug, context, etlua, render, template, context]
rc = lua_pcall(L, 2, 1, 0);
if (rc != LUA_OK) {
lua_pushfstring(L, "Failed rendering template: %s", lua_tostring(L, -1));
goto cleanup;
}
// stack: [db, slug, context, etlua, output]
if (lua_isnil(L, -1)) {
lua_pushfstring(L, "Failed rendering template: got nil");
goto cleanup;
}
if (strcmp(tmpl_name, "") != 0) {
lua_setfield(L, 3, "content");
sqlite3_reset(stmt);
continue;
// stack: [db, slug, context, etlua]
}
break;
}
cleanup:
sqlite3_free(tmpl_name);
syslog(LOG_DEBUG, "Finalizing lua_render statement");
sqlite3_finalize(stmt);
if (rc)
return lua_error(L);
return 1;
}
bool match(lua_State *L, char *str, const char *pattern) {
lua_getglobal(L, "string");
lua_getfield(L, 1, "match");
lua_pushstring(L, str);
lua_pushstring(L, pattern);
bool matched = lua_pcall(L, 2, 1, 0) == LUA_OK && lua_isstring(L, -1);
lua_pop(L, 2);
return matched;
}
char *replace(lua_State *L, char *str, const char *pattern, const char *repl) {
lua_getglobal(L, "string");
lua_getfield(L, 1, "gsub");
lua_pushstring(L, str);
lua_pushstring(L, pattern);
lua_pushstring(L, repl);
char *result = NULL;
if (lua_pcall(L, 3, 1, 0) == LUA_OK && lua_isstring(L, -1)) {
result = sqlite3_mprintf("%s", lua_tostring(L, -1));
}
lua_pop(L, 2);
return result;
}
static char *mime_type(lua_State *L, char *path) {
syslog(LOG_DEBUG, "Calculating MIME type for %s", path);
magic_t cookie = magic_open(MAGIC_MIME_TYPE);
if (cookie == NULL) {
syslog(LOG_ERR, "Failed opening libmagic cookie: %m");
return NULL;
}
char *result = NULL;
if (magic_load(cookie, NULL) != 0) {
syslog(LOG_ERR, "Failed loading libmagic DB: %s", magic_error(cookie));
goto cleanup;
}
const char *mime = magic_file(cookie, path);
if (mime == NULL) {
syslog(LOG_ERR, "Failed parsing magic file: %s", magic_error(cookie));
goto cleanup;
}
if (strcmp(mime, "text/plain") == 0) {
if (match(L, path, "%.css$")) {
mime = "text/css";
} else if (match(L, path, "%.lua$")) {
mime = "text/x-lua";
}
}
result = sqlite3_mprintf("%s", mime);
syslog(LOG_DEBUG, "MIME type of %s is %s", path, result);
cleanup:
magic_close(cookie);
return result;
}
static char *parse_time(time_t time) {
syslog(LOG_ERR, "Parsing time %ld", time);
size_t size = sizeof("2022-01-01T00:00:00");
char *target = sqlite3_malloc(size);
strftime(target, size, "%Y-%m-%dT%H:%M:%S", gmtime(&time));
return target;
}
static int parse_html(lua_State *L, struct resource *res, char *abspath) {
syslog(LOG_DEBUG, "Parsing HTML file %s", abspath);
res->slug = replace(L, res->slug, "%.html$", "");
res->mime = sqlite3_mprintf("text/html");
const char *keys[] = {"name", "template", "status", "tags", "ctime", "mtime"};
for (int i = 0; i < 6; i++) {
lua_getglobal(L, "string");
lua_getfield(L, 1, "match");
lua_pushstring(L, res->content);
lua_pushfstring(L, "<!%%-%%- %s: ([^>]+) %%-%%->", keys[i]);
if (lua_pcall(L, 2, 1, 0) == LUA_OK) {
if (lua_isnil(L, -1)) {
continue;
}
char *value = sqlite3_mprintf("%s", lua_tostring(L, -1));
if (strcmp(keys[i], "name") == 0) {
res->name = value;
} else if (strcmp(keys[i], "template") == 0) {
res->tmpl = value;
} else if (strcmp(keys[i], "status") == 0) {
if (strcmp(value, "unpub") == 0) {
res->status = UNPUB;
} else if (strcmp(value, "gone") == 0) {
res->status = GONE;
} else if (strcmp(value, "moved") == 0) {
res->status = MOVED;
} else {
res->status = PUB;
}
} else if (strcmp(keys[i], "tags") == 0) {
int i = 0;
char *tag = strtok(value, ", ");
while (tag) {
// we are allocating enough memory for one tag (or the number of tags
// we have) plus one NULL pointer (sentinel)
if (i)
res->tags = sqlite3_realloc(res->tags, sizeof(char *) * (i + 2));
else
res->tags = sqlite3_malloc(sizeof(char *) * 2);
res->tags[i] = tag;
tag = strtok(NULL, ", ");
i++;
}
res->tags[i] = NULL;
} else if (strcmp(keys[i], "ctime") == 0) {
res->ctime = value;
} else if (strcmp(keys[i], "mtime") == 0) {
res->mtime = value;
} else {
sqlite3_free(value);
}
lua_pop(L, 1);
}
}
lua_pop(L, lua_gettop(L));
return 0;
}
static int parse_scss(lua_State *L, struct resource *res, char *abspath) {
syslog(LOG_DEBUG, "Parsing SCSS file %s", abspath);
struct Sass_Options *options = sass_make_options();
sass_option_set_output_style(options, SASS_STYLE_COMPRESSED);
sass_option_set_precision(options, 10);
struct Sass_Data_Context *ctx =
sass_make_data_context(strndup(res->content, res->size));
struct Sass_Context *ctx_out = sass_data_context_get_context(ctx);
sass_data_context_set_options(ctx, options);
sass_compile_data_context(ctx);
int rc = 0;
if (sass_context_get_error_status(ctx_out)) {
const char *error_message = sass_context_get_error_message(ctx_out);
if (error_message) {
syslog(LOG_ERR, "Failed parsing SCSS: %s", error_message);
} else {
syslog(LOG_ERR, "Failed parsing SCSS: no error message available");
}
rc = 1;
goto cleanup;
}
res->content = sqlite3_mprintf("%s", sass_context_get_output_string(ctx_out));
res->slug = replace(L, res->slug, "%.scss$", ".css");
res->mime = sqlite3_mprintf("text/css");
res->size = strlen(res->content);
cleanup:
sass_delete_data_context(ctx);
return rc;
}
static int parse_sql(sqlite3 *db, lua_State *L, struct resource *res,
char *abspath) {
syslog(LOG_DEBUG, "Importing SQL statements from %s", abspath);
const char *stmts[] = {"BEGIN", res->content, "COMMIT"};
int rc = 0;
for (int i = 0; i < 3; i++) {
char *stmt = strtok((char *)stmts[i], ";");
while (stmt && !match(L, stmt, "^%s+$")) {
rc = execute(db, stmt);
if (rc) {
syslog(LOG_ERR, "Failed importing %s: %s", abspath, sqlite3_errstr(rc));
if (i > 0) {
execute(db, "ROLLBACK");
}
goto cleanup;
}
stmt = strtok(NULL, ";");
}
}
cleanup:
free_resource(res);
return rc;
}
static void remove_newline(char *input) {
char *pch = strstr(input, "\n");
if (pch != NULL)
strncpy(pch, "\0", 1);
}
static int import_meta(lua_State *L, sqlite3 *db, char *abspath) {
syslog(LOG_DEBUG, "Importing META file");
sqlite3_stmt *stmt;
FILE *fd = NULL;
char *line = NULL;
bool opened_file = false;
int rc = sqlite3_prepare_v2(db,
"REPLACE INTO resources(slug, status, moved_to)"
" VALUES (?, ?, ?)",
-1, &stmt, NULL);
if (rc) {
syslog(LOG_ERR, "META: Failed preparing statement: %s", sqlite3_errstr(rc));
goto cleanup;
}
fd = fopen(abspath, "r");
if (fd == NULL) {
rc = errno;
syslog(LOG_ERR, "META: Failed opening file %s: %m", abspath);
goto cleanup;
}
opened_file = true;
size_t len = 0;
while (getline(&line, &len, fd) != -1) {
char *token = strtok(line, " ");
int i = 0;
while (token) {
remove_newline(token);
switch (i) {
case 0:
rc = sqlite3_bind_text(stmt, 1, token, -1, NULL);
break;
case 1:
if (strcmp(token, "permanent") == 0) {
rc = sqlite3_bind_int(stmt, 2, MOVED);
} else if (strcmp(token, "gone") == 0) {
rc = sqlite3_bind_int(stmt, 2, GONE);
} else if (strcmp(token, "not_found") == 0) {
rc = sqlite3_bind_int(stmt, 2, UNPUB);
} else {
syslog(LOG_ERR, "META: Invalid status %s in line %s", token, line);
rc = 1;
goto cleanup;
}
break;
case 2:
rc = sqlite3_bind_text(stmt, 3, token, -1, NULL);
break;
default:
syslog(LOG_ERR, "META: Invalid line %s", line);
rc = 1;
goto cleanup;
}
if (rc) {
syslog(LOG_ERR, "META: Failed binding %d: %s", i, sqlite3_errstr(rc));
goto cleanup;
}
token = strtok(NULL, " ");
i++;
}
rc = sqlite3_step(stmt);
if (rc != SQLITE_DONE && rc != SQLITE_ROW) {
syslog(LOG_ERR, "META: Failed executing statement: %s",
sqlite3_errstr(rc));
goto cleanup;
}
rc = 0;
sqlite3_reset(stmt);
}
cleanup:
syslog(LOG_DEBUG, "META: Finalizing statement");
sqlite3_finalize(stmt);
if (opened_file)
fclose(fd);
if (line)
free(line);
return rc;
}
static int import_file(lua_State *L, sqlite3 *db, char *root, char *abspath,
char *relpath, struct stat fstat) {
syslog(LOG_DEBUG, "Importing file %s", abspath);
struct resource res = {.srcpath = sqlite3_mprintf("%s", relpath),
.slug = sqlite3_mprintf("%s", relpath),
.mime = mime_type(L, abspath),
.baseurl = NULL,
.name = sqlite3_mprintf("%s", basename(relpath)),
.status = 0,
.tmpl = NULL,
.moved_to = NULL,
.content = NULL,
.ctime = parse_time(fstat.st_mtime),
.mtime = parse_time(fstat.st_mtime)};
FILE *fd;
int rc = 0;
bool file_opened = false;
bool file_closed = false;
bool txn_began = false;
bool txn_committed = false;
fd = fopen(abspath, "rb");
if (fd == 0) {
rc = errno;
syslog(LOG_ERR, "Failed opening file %s: %m", abspath);
goto cleanup;
}
file_opened = true;
res.content = sqlite3_malloc(fstat.st_size + 1);
if (res.content == 0) {
rc = errno;
syslog(LOG_ERR, "Failed allocating memory for file %s: %m", abspath);
goto cleanup;
}
if (fstat.st_size > 0 && fread(res.content, fstat.st_size, 1, fd) != 1) {
rc = errno;
syslog(LOG_ERR, "Failed reading file %s: %m", abspath);
goto cleanup;
}
res.content[fstat.st_size] = '\0';
fclose(fd);
file_closed = true;
res.size = fstat.st_size;
if (strcmp(res.name, "import.sql") == 0) {
return parse_sql(db, L, &res, abspath);
} else if (match(L, abspath, "%.html$")) {
rc = parse_html(L, &res, abspath);
if (rc) {
syslog(LOG_ERR, "Failed parsing HTML file %s: %d", abspath, rc);
goto cleanup;
}
} else if (match(L, abspath, "%.scss$")) {
rc = parse_scss(L, &res, abspath);
if (rc) {
syslog(LOG_ERR, "Failed parsing SCSS file %s: %d", abspath, rc);
goto cleanup;
}
} else if (match(L, abspath, "%.lua$")) {
sqlite3_free(res.mime);
res.mime = sqlite3_mprintf("text/x-lua");
res.slug = replace(L, res.slug, "%.lua$", "");
}
if (match(L, res.slug, "/index$")) {
if (!match(L, res.slug, "^/templates/index$")) {
res.slug = replace(L, res.slug, "/index$", "");
if (strcmp(res.slug, "") == 0) {
res.slug = sqlite3_mprintf("/");
}
}
}
rc = execute(db, "BEGIN");
if (rc) {
goto cleanup;
}
txn_began = true;
rc = execute(db,
"INSERT OR REPLACE INTO resources "
"(slug, srcpath, mime, name, status, content, size, template, "
"moved_to, "
" ctime, mtime) "
"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
sqlite_bind(SQLITE_TEXT, 0, 0, res.slug, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.srcpath, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.mime, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.name, 0),
sqlite_bind(SQLITE_INTEGER, res.status, 0, NULL, 0),
sqlite_bind(SQLITE_BLOB, 0, 0, res.content, res.size),
sqlite_bind(SQLITE_INTEGER, res.size, 0, NULL, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.tmpl, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.moved_to, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.ctime, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.mtime, 0));
if (rc) {
syslog(LOG_ERR, "Failed inserting to database: %s", sqlite3_errstr(rc));
goto cleanup;
}
rc = execute(db, "DELETE FROM tags WHERE slug=?",
sqlite_bind(SQLITE_TEXT, 0, 0, res.slug, 0));
if (rc) {
syslog(LOG_ERR, "Failed removing existing tags: %s", sqlite3_errstr(rc));
goto cleanup;
}
if (res.tags) {
for (int i = 0; res.tags[i] != NULL; i++) {
rc = execute(db, "INSERT INTO tags VALUES (?, ?)",
sqlite_bind(SQLITE_TEXT, 0, 0, res.slug, 0),
sqlite_bind(SQLITE_TEXT, 0, 0, res.tags[i], 0));
if (rc) {
syslog(LOG_ERR, "Failed inserting tag %s: %s", res.tags[i],
sqlite3_errstr(rc));
goto cleanup;
}
}
}
rc = execute(db, "COMMIT");
if (rc) {
syslog(LOG_ERR, "Failed committing transaction: %s", sqlite3_errstr(rc));
goto cleanup;
}
txn_committed = true;
cleanup:
if (file_opened && !file_closed)
fclose(fd);
if (txn_began && !txn_committed)
execute(db, "ROLLBACK");
free_resource(&res);
return rc;
}
static int build_dir(lua_State *L, sqlite3 *db, char *root, char *relpath) {
int rc = 0;
char *abspath = NULL;
char *absfilepath = NULL;
char *relfilepath = NULL;
DIR *dir = NULL;
if (relpath == NULL) {
abspath = sqlite3_mprintf("%s", root);
} else {
abspath = sqlite3_mprintf("%s/%s", root, relpath);
}
char *ignorepath = sqlite3_mprintf("%s/.nowool", abspath);
if (access(ignorepath, F_OK) == 0) {
syslog(LOG_DEBUG, "Ignoring directory %s because of .nowool file", abspath);
goto cleanup;
}
syslog(LOG_DEBUG, "Building directory %s", abspath);
dir = opendir(abspath);
if (dir == NULL) {
rc = 1;
syslog(LOG_ERR, "Failed opening directory %s: %m", abspath);
goto cleanup;
}
struct dirent *entry;
while ((entry = readdir(dir)) != NULL) {
if (entry->d_name[0] == '.')
continue;
syslog(LOG_DEBUG, "Working on entry %s", entry->d_name);
absfilepath = sqlite3_mprintf("%s/%s", abspath, entry->d_name);
relfilepath = sqlite3_mprintf("%s/%s", relpath, entry->d_name);
struct stat fstat;
rc = lstat(absfilepath, &fstat);
if (rc) {
syslog(LOG_ERR, "Failed running lstat on %s: %m", absfilepath);
goto loopcleanup;
}
if (S_ISDIR(fstat.st_mode) || entry->d_type == DT_DIR) {
lua_pop(L, lua_gettop(L));
rc = build_dir(L, db, root, relfilepath);
if (rc) {
syslog(LOG_ERR, "Failed building directory %s: %m", absfilepath);
goto loopcleanup;
}
} else if (S_ISREG(fstat.st_mode) || entry->d_type == DT_REG) {
lua_pop(L, lua_gettop(L));
if (relpath == NULL && strcmp(relfilepath, "/META") == 0) {
rc = import_meta(L, db, absfilepath);
} else {
rc = import_file(L, db, root, absfilepath, relfilepath, fstat);
}
if (rc) {
syslog(LOG_ERR, "Failed importing file %s: %m", absfilepath);
goto loopcleanup;
}
}
loopcleanup:
sqlite3_free(relfilepath);
sqlite3_free(absfilepath);
if (rc)
goto cleanup;
}
cleanup:
if (dir)
closedir(dir);
sqlite3_free(ignorepath);
sqlite3_free(abspath);
return rc;
}
static int generate_sitemap(sqlite3 *db) {
syslog(LOG_DEBUG, "Generating sitemap.xml");
const char *template =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n"
" <% for i = 1, #resources do %>\n"
" <url>\n"
" <loc><%= baseurl %><%= resources[i].slug %></loc>\n"
" <lastmod><%= resources[i].mtime %></lastmod>\n"
" </url>\n"
" <% end %>\n"
"</urlset>";
size_t tmpl_size = strlen(template);
int rc = execute(db,
"INSERT OR REPLACE INTO resources"
"(slug, mime, status, content, size)"
"VALUES ('system:/sitemap.xml', 'application/xml', ?, ?, ?)",
sqlite_bind(SQLITE_INTEGER, PUB, 0, NULL, 0),
sqlite_bind(SQLITE_BLOB, 0, 0, (char *)template, tmpl_size),
sqlite_bind(SQLITE_INTEGER, tmpl_size, 0, NULL, 0));
if (rc) {
syslog(LOG_ERR, "Failed inserting sitemap template: %s",
sqlite3_errstr(rc));
goto cleanup;
}
const char *content = "function render(sheepwool, db, req)\n"
" local resources = sheepwool.query(db, [[\n"
" SELECT slug, mtime\n"
" FROM resources\n"
" WHERE slug NOT LIKE '/templates/%'\n"
" AND status = 0\n"
" AND mime IN ('text/html', 'text/x-lua')\n"
" ORDER BY slug\n"
" ]])\n"
"\n"
" local context = {\n"
" [\"name\"] = \"Sitemap\",\n"
" [\"resources\"] = resources,\n"
" [\"baseurl\"] = string.format(\"%s://%s%s\", "
"req.scheme, req.host, req.root),\n"
" }\n"
"\n"
" return \"application/xml\", sheepwool.render(db, "
"\"system:/sitemap.xml\", context)\n"
"end\n"
"\n"
"return {\n"
" [\"render\"] = render,\n"
"}\n";
size_t size = strlen(content);