diff --git a/404.html b/404.html
new file mode 100644
index 0000000..e673396
--- /dev/null
+++ b/404.html
@@ -0,0 +1,155 @@
+
+
+
+
+
+
+ Ghink Universe - 404
+
+
+
+
+
+
+
+
+
+
+
404
+
+ Page not found 页面找不到了
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/config.json b/config.json
new file mode 100644
index 0000000..9ee40ce
--- /dev/null
+++ b/config.json
@@ -0,0 +1,16 @@
+{
+ "DEBUG": false,
+ "DB": {
+ "host": "localhost",
+ "user": "root",
+ "password": "root",
+ "database": "short_link"
+ },
+ "KEYS": [
+ "Example"
+ ],
+ "LISTEN": [
+ "0.0.0.0",
+ "50002"
+ ]
+}
\ No newline at end of file
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..c37f931
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,39 @@
+module short_link_go
+
+go 1.21.6
+
+require (
+ github.com/gin-gonic/gin v1.10.0
+ github.com/go-sql-driver/mysql v1.8.1
+ github.com/joho/godotenv v1.5.1
+)
+
+require (
+ filippo.io/edwards25519 v1.1.0 // indirect
+ github.com/bytedance/sonic v1.11.6 // indirect
+ github.com/bytedance/sonic/loader v0.1.1 // indirect
+ github.com/cloudwego/base64x v0.1.4 // indirect
+ github.com/cloudwego/iasm v0.2.0 // indirect
+ github.com/gabriel-vasile/mimetype v1.4.3 // indirect
+ github.com/gin-contrib/sse v0.1.0 // indirect
+ github.com/go-playground/locales v0.14.1 // indirect
+ github.com/go-playground/universal-translator v0.18.1 // indirect
+ github.com/go-playground/validator/v10 v10.20.0 // indirect
+ github.com/goccy/go-json v0.10.2 // indirect
+ github.com/json-iterator/go v1.1.12 // indirect
+ github.com/klauspost/cpuid/v2 v2.2.7 // indirect
+ github.com/leodido/go-urn v1.4.0 // indirect
+ github.com/mattn/go-isatty v0.0.20 // indirect
+ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+ github.com/modern-go/reflect2 v1.0.2 // indirect
+ github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+ github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+ github.com/ugorji/go/codec v1.2.12 // indirect
+ golang.org/x/arch v0.8.0 // indirect
+ golang.org/x/crypto v0.23.0 // indirect
+ golang.org/x/net v0.25.0 // indirect
+ golang.org/x/sys v0.20.0 // indirect
+ golang.org/x/text v0.15.0 // indirect
+ google.golang.org/protobuf v1.34.1 // indirect
+ gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..d917f49
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,95 @@
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0=
+github.com/bytedance/sonic v1.11.6/go.mod h1:LysEHSvpvDySVdC2f87zGWf6CIKJcAvqab1ZaiQtds4=
+github.com/bytedance/sonic/loader v0.1.1 h1:c+e5Pt1k/cy5wMveRDyk2X4B9hF4g7an8N3zCYjJFNM=
+github.com/bytedance/sonic/loader v0.1.1/go.mod h1:ncP89zfokxS5LZrJxl5z0UJcsk4M4yY2JpfqGeCtNLU=
+github.com/cloudwego/base64x v0.1.4 h1:jwCgWpFanWmN8xoIUHa2rtzmkd5J2plF/dnLS6Xd/0Y=
+github.com/cloudwego/base64x v0.1.4/go.mod h1:0zlkT4Wn5C6NdauXdJRhSKRlJvmclQ1hhJgA0rcu/8w=
+github.com/cloudwego/iasm v0.2.0 h1:1KNIy1I1H9hNNFEEH3DVnI4UujN+1zjpuk6gwHLTssg=
+github.com/cloudwego/iasm v0.2.0/go.mod h1:8rXZaNYT2n95jn+zTI1sDr+IgcD2GVs0nlbbQPiEFhY=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
+github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
+github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE=
+github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
+github.com/gin-gonic/gin v1.10.0 h1:nTuyha1TYqgedzytsKYqna+DfLos46nTv2ygFy86HFU=
+github.com/gin-gonic/gin v1.10.0/go.mod h1:4PMNQiOhvDRa013RKVbsiNwoyezlm2rm0uX/T7kzp5Y=
+github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s=
+github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
+github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA=
+github.com/go-playground/locales v0.14.1/go.mod h1:hxrqLVvrK65+Rwrd5Fc6F2O76J/NuW9t0sjnWqG1slY=
+github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJnYK9S473LQFuzCbDbfSFY=
+github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
+github.com/go-playground/validator/v10 v10.20.0 h1:K9ISHbSaI0lyB2eWMPJo+kOS/FBExVwjEviJTixqxL8=
+github.com/go-playground/validator/v10 v10.20.0/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM=
+github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
+github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
+github.com/klauspost/cpuid/v2 v2.2.7 h1:ZWSB3igEs+d0qvnxR/ZBzXVmxkgt8DdzP6m9pfuVLDM=
+github.com/klauspost/cpuid/v2 v2.2.7/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
+github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ=
+github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v1.0.2 h1:xBagoLtFs94CBntxluKeaWgTMpvLxC4ur3nMaC9Gz0M=
+github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
+github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
+github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
+github.com/ugorji/go/codec v1.2.12 h1:9LC83zGrHhuUA9l16C9AHXAqEV/2wBQ4nkvumAE65EE=
+github.com/ugorji/go/codec v1.2.12/go.mod h1:UNopzCgEMSXjBc6AOMqYvWC1ktqTAfzJZUZgYf6w6lg=
+golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
+golang.org/x/arch v0.8.0 h1:3wRIsP3pM4yUptoR96otTUOXI367OS0+c9eeRi9doIc=
+golang.org/x/arch v0.8.0/go.mod h1:FEVrYAQjsQXMVJ1nsMoVVXPZg6p2JE2mx8psSWTDQys=
+golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
+google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+nullprogram.com/x/optparse v1.0.0/go.mod h1:KdyPE+Igbe0jQUrVfMqDMeJQIJZEuyV7pjYmp6pbG50=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..9a5e785
--- /dev/null
+++ b/main.go
@@ -0,0 +1,250 @@
+package main
+
+import (
+ "database/sql"
+ "encoding/json"
+ "errors"
+ "fmt"
+ "math/rand"
+ "net/http"
+ "os"
+ "strconv"
+ "time"
+
+ "github.com/gin-gonic/gin"
+ _ "github.com/go-sql-driver/mysql"
+)
+
+var (
+ db *sql.DB
+ fieldMap = map[rune]int{
+ 'A': 0, 'a': 1, 'B': 2, 'b': 3,
+ 'C': 4, 'c': 5, 'D': 6, 'd': 7,
+ '1': 8, 'E': 9, 'e': 10, 'F': 11,
+ 'f': 12, 'G': 13, 'g': 14, 'H': 15,
+ 'h': 16, '2': 17, 'I': 18, 'i': 19,
+ 'J': 20, 'j': 21, 'K': 22, 'k': 23,
+ 'L': 24, 'l': 25, '3': 26, 'M': 27,
+ 'm': 28, 'N': 29, 'n': 30, 'O': 31,
+ 'o': 32, 'P': 33, 'p': 34, '4': 35,
+ 'Q': 36, 'q': 37, 'R': 38, 'r': 39,
+ 'S': 40, 's': 41, 'T': 42, 't': 43,
+ '5': 44, 'U': 45, 'u': 46, 'V': 47,
+ 'v': 48, 'W': 49, 'w': 50, 'X': 51,
+ 'x': 52, '6': 53, 'Y': 54, 'y': 55,
+ 'Z': 56, 'z': 57, '7': 58, '8': 59,
+ '9': 60, '0': 61,
+ }
+)
+
+type Config struct {
+ DB DBConfig `json:"DB"`
+ KEYS []string `json:"KEYS"`
+ LISTEN []string `json:"LISTEN"`
+ DEBUG bool `json:"DEBUG"`
+}
+
+type DBConfig struct {
+ Host string `json:"host"`
+ User string `json:"user"`
+ Password string `json:"password"`
+ Database string `json:"database"`
+}
+
+func loadConfig() (Config, error) {
+ file, err := os.Open("config.json")
+ if err != nil {
+ return Config{}, err
+ }
+ defer func(file *os.File) {
+ err = file.Close()
+ if err != nil {
+ panic(err)
+ }
+ }(file)
+
+ var config Config
+ if err = json.NewDecoder(file).Decode(&config); err != nil {
+ return Config{}, err
+ }
+ return config, nil
+}
+
+func initDB(dbConfig DBConfig) error {
+ var err error
+ dsn := fmt.Sprintf("%s:%s@tcp(%s)/%s", dbConfig.User, dbConfig.Password, dbConfig.Host, dbConfig.Database)
+ db, err = sql.Open("mysql", dsn)
+ return err
+}
+
+func read404Page() (string, error) {
+ data, err := os.ReadFile("404.html")
+ if err != nil {
+ return "", err
+ }
+ return string(data), nil
+}
+
+func main() {
+ config, err := loadConfig()
+ if err != nil {
+ panic(err)
+ }
+
+ if err = initDB(config.DB); err != nil {
+ panic(err)
+ }
+ defer func(db *sql.DB) {
+ err = db.Close()
+ if err != nil {
+ fmt.Println(err.Error())
+ return
+ }
+ }(db)
+
+ router := gin.Default()
+
+ router.GET("/", func(c *gin.Context) {
+ c.Redirect(http.StatusFound, "https://k76u22n4gd.apifox.cn")
+ })
+
+
+ router.GET("/:link_id", func(c *gin.Context) {
+ linkID := c.Param("link_id")
+
+ for _, char := range linkID {
+ if _, exists := fieldMap[char]; !exists {
+ page, _ := read404Page()
+ c.Data(http.StatusNotFound, "text/html", []byte(page))
+ return
+ }
+ }
+
+ linkIDConverted := 0
+ for i := 0; i < len(linkID); i++ {
+ char := rune(linkID[len(linkID)-1-i])
+ linkIDConverted += fieldMap[char] * intPow(62, i)
+ }
+
+ var link string
+ var validity sql.NullInt64
+ err = db.QueryRow("SELECT link, validity FROM links WHERE id=?", linkIDConverted).Scan(&link, &validity)
+ if err != nil || link == "" {
+ page, _ := read404Page()
+ c.Data(http.StatusNotFound, "text/html", []byte(page))
+ return
+ }
+
+ if validity.Valid && validity.Int64 < time.Now().Unix() {
+ removeLink(linkIDConverted)
+ page, _ := read404Page()
+ c.Data(http.StatusNotFound, "text/html", []byte(page))
+ return
+ }
+
+ c.Redirect(http.StatusFound, link)
+ })
+
+ router.POST("/", func(c *gin.Context) {
+ key := c.PostForm("key")
+ link := c.PostForm("link")
+ validity := c.PostForm("validity")
+
+ if key == "" || link == "" {
+ c.JSON(http.StatusBadRequest, gin.H{"ok": false, "message": "bad field(s)", "content": ""})
+ return
+ }
+
+ if !contains(config.KEYS, key) {
+ c.JSON(http.StatusForbidden, gin.H{"ok": false, "message": "forbidden", "content": ""})
+ return
+ }
+
+ var validityInt *int64
+ if validity != "" {
+ v, err := strconv.ParseInt(validity, 10, 64)
+ if err != nil || v <= time.Now().Unix() {
+ c.JSON(http.StatusBadRequest, gin.H{"ok": false, "message": "bad field(s)", "content": ""})
+ return
+ }
+ validityInt = &v
+ }
+
+ var linkIDRandom string
+ var linkIDConverted int
+ for {
+ linkIDRandom = randomString(6)
+ linkIDConverted = 0
+ for i := 0; i < len(linkIDRandom); i++ {
+ char := rune(linkIDRandom[len(linkIDRandom)-1-i])
+ linkIDConverted += fieldMap[char] * intPow(62, i)
+ }
+
+ var existingLink string
+ err = db.QueryRow("SELECT link FROM links WHERE id=?", linkIDConverted).Scan(&existingLink)
+ if err != nil && !errors.Is(sql.ErrNoRows, err) {
+ c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "message": "error", "content": ""})
+ return
+ }
+ if existingLink == "" {
+ break
+ }
+ }
+
+ _, err = db.Exec("INSERT INTO links VALUES (?, ?, ?)", linkIDConverted, link, validityInt)
+ if err != nil {
+ c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "message": "error", "content": ""})
+ return
+ }
+
+ c.JSON(http.StatusOK, gin.H{"ok": true, "message": "successful", "content": linkIDRandom})
+ })
+
+ router.PATCH("/", func(c *gin.Context) {
+ config, err = loadConfig()
+ if err != nil {
+ c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "message": "error"})
+ return
+ }
+
+ if err = initDB(config.DB); err != nil {
+ c.JSON(http.StatusInternalServerError, gin.H{"ok": false, "message": "error"})
+ return
+ }
+
+ c.JSON(http.StatusOK, gin.H{"ok": true, "message": "successful"})
+ })
+
+ router.Run(fmt.Sprintf("%s:%s", config.LISTEN[0], config.LISTEN[1]))
+}
+
+func intPow(base, exp int) int {
+ result := 1
+ for exp > 0 {
+ result *= base
+ exp--
+ }
+ return result
+}
+
+func randomString(length int) string {
+ const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+ result := make([]rune, length)
+ for i := range result {
+ result[i] = rune(chars[rand.Intn(len(chars))])
+ }
+ return string(result)
+}
+
+func contains(slice []string, item string) bool {
+ for _, a := range slice {
+ if a == item {
+ return true
+ }
+ }
+ return false
+}
+
+func removeLink(id int) {
+ _, _ = db.Exec("DELETE FROM links WHERE id=?", id)
+}
diff --git a/short_link.sql b/short_link.sql
new file mode 100644
index 0000000..f871704
--- /dev/null
+++ b/short_link.sql
@@ -0,0 +1,22 @@
+SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
+START TRANSACTION;
+SET time_zone = "+00:00";
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+/*!40101 SET NAMES utf8mb4 */;
+
+CREATE TABLE `links` (
+ `id` bigint(20) NOT NULL,
+ `link` text NOT NULL,
+ `validity` bigint(20) DEFAULT NULL
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+ALTER TABLE `links`
+ ADD PRIMARY KEY (`id`);
+COMMIT;
+
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;