wide/output/cross.go

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// Copyright (c) 2014-present, b3log.org
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//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package output
import (
"bufio"
"encoding/json"
"io"
"io/ioutil"
"math/rand"
"net/http"
"os/exec"
"path/filepath"
"strconv"
"strings"
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"github.com/b3log/gulu"
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"github.com/b3log/wide/conf"
"github.com/b3log/wide/i18n"
"github.com/b3log/wide/session"
)
// CrossCompilationHandler handles request of cross compilation.
func CrossCompilationHandler(w http.ResponseWriter, r *http.Request) {
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result := gulu.Ret.NewResult()
defer gulu.Ret.RetResult(w, r, result)
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httpSession, _ := session.HTTPSession.Get(r, session.CookieName)
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if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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uid := httpSession.Values["uid"].(string)
locale := conf.GetUser(uid).Locale
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var args map[string]interface{}
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
logger.Error(err)
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result.Code = -1
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return
}
sid := args["sid"].(string)
filePath := args["path"].(string)
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if gulu.Go.IsAPI(filePath) || !session.CanAccess(uid, filePath) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
platform := args["platform"].(string)
goos := strings.Split(platform, "_")[0]
goarch := strings.Split(platform, "_")[1]
curDir := filepath.Dir(filePath)
suffix := ""
if "windows" == goos {
suffix = ".exe"
}
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user := conf.GetUser(uid)
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goBuildArgs := []string{}
goBuildArgs = append(goBuildArgs, "build")
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goBuildArgs = append(goBuildArgs, user.BuildArgs(goos)...)
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cmd := exec.Command("go", goBuildArgs...)
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cmd.Dir = curDir
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setCmdEnv(cmd, uid)
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for i, env := range cmd.Env {
if strings.HasPrefix(env, "GOOS=") {
cmd.Env[i] = "GOOS=" + goos
continue
}
if strings.HasPrefix(env, "GOARCH=") {
cmd.Env[i] = "GOARCH=" + goarch
continue
}
}
executable := filepath.Base(curDir) + suffix
executable = filepath.Join(curDir, executable)
name := filepath.Base(curDir) + "-" + goos + "-" + goarch
stdout, err := cmd.StdoutPipe()
if nil != err {
logger.Error(err)
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result.Code = -1
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return
}
stderr, err := cmd.StderrPipe()
if nil != err {
logger.Error(err)
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result.Code = -1
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return
}
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if 0 != result.Code {
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return
}
channelRet := map[string]interface{}{}
if nil != session.OutputWS[sid] {
// display "START [go build]" in front-end browser
channelRet["output"] = "<span class='start-build'>" + i18n.Get(locale, "start-build").(string) + "</span>\n"
channelRet["cmd"] = "start-build"
wsChannel := session.OutputWS[sid]
err := wsChannel.WriteJSON(&channelRet)
if nil != err {
logger.Error(err)
return
}
wsChannel.Refresh()
}
reader := bufio.NewReader(io.MultiReader(stdout, stderr))
if err := cmd.Start(); nil != err {
logger.Error(err)
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result.Code = -1
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return
}
go func(runningId int) {
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defer gulu.Panic.Recover()
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defer cmd.Wait()
// read all
buf, _ := ioutil.ReadAll(reader)
channelRet := map[string]interface{}{}
channelRet["cmd"] = "cross-build"
channelRet["executable"] = executable
channelRet["name"] = name
if 0 == len(buf) { // build success
channelRet["output"] = "<span class='build-succ'>" + i18n.Get(locale, "build-succ").(string) + "</span>\n"
} else { // build error
// build gutter lint
errOut := string(buf)
lines := strings.Split(errOut, "\n")
// path process
var errOutWithPath string
for _, line := range lines {
errOutWithPath += parsePath(curDir, line) + "\n"
}
channelRet["output"] = "<span class='build-error'>" + i18n.Get(locale, "build-error").(string) + "</span>\n" +
"<span class='stderr'>" + errOutWithPath + "</span>"
// lint process
if lines[0][0] == '#' {
lines = lines[1:] // skip the first line
}
lints := []*Lint{}
for _, line := range lines {
if len(line) < 1 {
continue
}
if line[0] == '\t' {
// append to the last lint
last := len(lints)
msg := lints[last-1].Msg
msg += line
lints[last-1].Msg = msg
continue
}
file := line[:strings.Index(line, ":")]
left := line[strings.Index(line, ":")+1:]
index := strings.Index(left, ":")
lineNo := 0
msg := left
if index >= 0 {
lineNo, err = strconv.Atoi(left[:index])
if nil != err {
continue
}
msg = left[index+2:]
}
lint := &Lint{
File: filepath.Join(curDir, file),
LineNo: lineNo - 1,
Severity: lintSeverityError,
Msg: msg,
}
lints = append(lints, lint)
}
channelRet["lints"] = lints
}
if nil != session.OutputWS[sid] {
wsChannel := session.OutputWS[sid]
err := wsChannel.WriteJSON(&channelRet)
if nil != err {
logger.Warn(err)
}
wsChannel.Refresh()
}
}(rand.Int())
}